**Find Simple interest based question**

Shortcut tricks on simple interest are one of the most

Before starting anything just do a math practice set. Then find out twenty math problems related to this topic and write those on a paper. Using basic math formula do first ten maths of that page. You also need to keep track of timing. Write down the time taken by you to solve those questions. Now practice our shortcut tricks on simple interest and read examples carefully. After doing this go back to the remaining ten questions and solve those using shortcut methods. Again keep track of Timing. This time you will surely see improvement in your timing. But this is not all you want. If you need to improve your timing more then you need to practice more.

You all know that math portion is very much important in competitive exams. That doesn’t mean that other sections are not so important. But only math portion can leads you to a good score. Only practice and practice can give you a good score. All you need to do is to do math problems correctly within time, and this can be achieved only by using shortcut tricks. Again it does not mean that you can’t do maths without using shortcut tricks. You may have that potential that you may do maths within time without using any shortcut tricks. But so many people can’t do this. Here we prepared simple interest shortcut tricks for those people. We always try to put all shortcut methods of the given topic. But if you see any tricks are missing from the list then please inform us. Your little help will help others.

When take up some money from other for the personal or commercial purpose we pay some additional money to him after a certain period of time is called Interest. So we can also called this Interest as Simple Interest. So we can find the simple interest on Principal using some formula. This type of problem are given in Quantitative Aptitude which is a very essential paper in banking exam. Under below given some more example for your better practice.

Find Simple Interest using formula

Formula

SI = ( P x T x R / 100 )

Here, P = Principal

R = Rate per annual

T = Number of years

Example #1

What would be the simple interest of Rs.18600/- in 8 months at the rate of 22/2% per annum?

- Rs.1663/-
- Rs.2653/-
- Rs.1837/-
- Rs.1364/-

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**Answer:**Option (D)

**How to Solve**

8 months = 8 / 12 = 2 / 3

SI = 18600 x 2 x 22 x 1 / 3 x 2 x 100 = 1364

So, the Simple Interest of Rs.18600/- in 8 months would be Rs.1364/-.

**Rough Workspace**

Example #2

What would be the simple interest of Rs.20/- for 5 months at the rate of 6 paise per rupee per month?

- Rs.3/-
- Rs.6/-
- Rs.8/-
- Rs.10/-

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**Answer:**Option (B)

**How to Solve**

SI = 20 x 5 x 6 / 100 = 6

So, the Simple Interest of Rs.20/- for 5 months would be Rs.6/-.

**Rough Workspace**

Example #3

Find the simple interest of Rs.75000/- at 4% per annum for 4 years.

- Rs.12000/-
- Rs.14000/-
- Rs.15500/-
- Rs.20000/-

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**Answer:**Option (A)

**How to Solve**

Here, P = 75000

R = 4% per annum

T = 4 years

SI = ( P x T x R / 100 ) = 75000 x 4 x 4 / 100 = 12000

So, the Simple Interest of Rs.75000/- would be Rs.12000/-.

**Rough Workspace**

Example #4

On amount of Rs.7530/- at the rate of 18% per annum for 6 years. What will be the simple interest?

- Rs.5000/-
- Rs.6947.34/-
- Rs.8132.40/-
- Rs.9654.42/-

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**Answer:**Option (C)

**How to Solve**

SI = 7530 x 18 x 6 / 100 = 8132.40

So, the Simple Interest of Rs.7530/- would be Rs.8132.40/-.

**Rough Workspace**

Example #5

Find the time required for Rs.10000/- to turned into Rs.12000/- at the rate of 4% per annum at Simple Interest?

- 3 Years
- 4 Years
- 5 Years
- 7 Years

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**Answer:**Option (C)

**How to Solve**

We know that SI = ( 12000 – 10000 ) = 2000

SI = 10000 x 4 x T / 100

T = 10000 X 4 / 100 X 2000

T = 5

So, the time required for Rs.10000/- to turned into Rs.12000/- would be 5 years.

**Rough Workspace**

Example #6

What will be the ratio of simple interest earned by certain amount at the same rate of interest for 5 years and 7 years?

- 2 : 3
- 5 : 7
- 7 : 5
- 7 : 9

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**Answer:**Option (B)

**How to Solve**

Let, Principal P and Rate of interest be R%.

So, Required interest for 5 years is-

SI = P x R x 5 / 100 = 5PR / 100

Required interest of 7 years is-

SI = P x R x 7 / 100 = 7PR / 100

Required ration is-

5PR / 7PR = 5 / 7 = 5 : 7

So, Required Ration is 5 : 7.

**Rough Workspace**

Example #7

What would be the simple interest acquired by certain amount at the same rate of interest for 4 years and also that for 8 years?

- 1 : 2
- 2 : 1
- 2 : 3
- 3 : 4

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**Answer:**Option (A)

**How to Solve**

Let, principle is P and rate of interest is R%.

Time = 4 years and 8 years.

SI = P x R x 4 / 100 : P x R x 8 / 100

= 4PR / 8PR

= 4 / 8

= 1 : 2

**Rough Workspace**

Example #8

Find the simple interest of Rs.40000/- at 25/4% per annum for the period from 4th January, 2017 to 18th march, 2018.

- Rs.300/-
- Rs.400/-
- Rs.450/-
- Rs.500/-

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**Answer:**Option (D)

**How to Solve**

First of all we need to calculate the period of time taken.

i.e, January = (31 – 4) = 27 days,

February = 28 days,

March = 18 day.

Add all together ( 27 + 28 + 18 ) = 73 / 365 year = 1 / 5 years.

We know that, P= 40000 and R = 25/4% p.a.

SI = 40000 x 25 x 1 x 1 / 4 x 100 x 5 = 500

So, the Simple Interest of Rs.40000/- would be Rs.500/-.

**Rough Workspace**

Example #9

What would be the simple interest earned by certain amount at the same rate of interest for 4 years and that for 8 years?

- 2 : 1
- 1 : 2
- 2 : 3
- 3 : 2

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**Answer:**Option (B)

**How to Solve**

Let, the principal be P

Rate of interest be R%

Time is 4 years and 8 years

So, Required ratio is-

( P x R x 4 /100 ) / ( P x R x 8 /100 )

= 4 / 8

= 1 / 2

= 1 : 2

**Rough Workspace**

Example #10

What would be the simple interest of Rs.85000/- at 15% per annum for 8 month?

- Rs.5500/-
- Rs.7500/-
- Rs.8500/-
- Rs.10000/-

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**Answer:**Option (C)

**How to Solve**

SI = 85000 x 2 x 15 / 3 x 100 = 8500.

So, the Simple Interest of Rs.85000/- would be Rs.8500/-.

**Rough Workspace**

Example #11

What would be the simple interest earned on an amount of Rs.18600/- in 8 months at the rate of 18/2% per annum?

- Rs.1116/-
- Rs.1673/-
- Rs.2176/-
- Rs.2723/-

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**Answer:**Option (A)

**How to Solve**

SI = 18600 x 2 x 1 x 18 / 3 x 100 x 2 = 1116.

So, the Simple Interest earned of Rs.18600/- in 8 months would be Rs.1116/-.

**Rough Workspace**

Example #12

What would be simple interest of Rs.1850/- from 2nd April to 14 June 2017 at the rate of 10% per annum?

- Rs.37/-
- Rs.42/-
- Rs.46/-
- Rs.49/-

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**Answer:**Option (A)

**How to Solve**

2nd April to 14 June 2017 = ( 28 + 31 + 14 ) = 73 Days = 1/5 Years.

SI = 1850 x 1 x 10 / 5 x 100

= 37

So, the Simple Interest of Rs.1860/- would be Rs.37/-.

**Rough Workspace**

Example #13

If Rs.75/- amounts to Rs.90/- in 2 years. What would be Rs.120/- amounts to in 6 years at the same time rate percent per annum?

- Rs.150/-
- Rs.175/-
- Rs.185/-
- Rs.192/-

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**Answer:**Option (D)

**How to Solve**

P = 75,

So, SI = ( 90 – 75 ) = 15, and time = 2 years

So, rate = ( 100 x 15 ) / ( 75 x 2 ) = 10%.

P = 120,

R = 10%

Time = 6 years

So, SI = 120 x 10 x 6 / 100 = 192

So, by Simple Interest Rs.120/- would tunes into Rs.192/- in 6 years.

**Rough Workspace**

### More Shortcut tricks on Simple and Compound Interest

- Find the rate % based question
- Find Principle or Sum based question
- Compound Interest shortcut tricks
- Find Compound Interest tricks
- Difference between CI and SI of Three Years question
- << Go back to SI and CI main page

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sir in quetion 13 r=15*100/75*2 y we dnt take the 2 in denominator

question no 12 and 13 are wrong plz chek once a time

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thanks for providing simple tricks

Well 12 & 13 both solutions are right ……. But there is problem in Q.8 ……either question is wrong acc. To your solution or solution is weong acc. To question

1) If question is wrong then there should be 18 march 2018 instead of 18 march 2017.

2) if question is right then T should be 438/365 instead of 73/365 .

Tq