Find Principle or Sum based question
When we borrowed money from some one or we lent out some money for a some certain period is called the Principle or Sum. So here we find the Principle or Sum based question tricks.here is amount is given and time, and rate percant is given we just use formula and obtain the principle or sum.
Find Principle or Sum based question
Example 1:
Samar take a sum from Anup at simple interest at 25x / 2 per annum and amounts to Rs.3202.50 after 6 years.Find the Sum or Principle taken by Samar from Anup .
Answer :
First We consider sum is x and Rate percent is 25x / 2 and Time is 6 years, So
Step 1:Then S.I. = Rs. P X R X T / 100 = 3x / 4.
Step 2: Amount = Sum + Simple Interest = x + 3x / 4 = 7x / 4.
Step 3: 7x / 4 = 3202.50 and x = 3202.50 X 4 / 7 = 1830.
Samar taken sum from Anup is 1830.
Example 2:
Suresh take a sum of money at simple interest amounts to Rs.985 in 2 years and to Rs. 885 in 3 years.Find The sum of money suresh was taken.
Answer :
Step 1: Simple interest in 1 year is = Rs.( 985 - 885 ) = 100.
Step 2: Simple Interest in 2 years = Rs.100 X 2 = 200.
Step 3: So, Principle = ( 985 - 200 ) = 785.
Example 3:
John borrowed some money at the rate of 4% p.a for the First 3 years. at rate of 7% p.a. for the next 4 years. If he pays a total interest of Rs. 12,600 at the end of seven years, how much money did he borrow?
Answer :
Let sum borrowed x then P = x
( P X R X T / 100 )
( x X 4 X 3 / 100) + ( x X 7 X 4 / 100) = 12600
( 3x / 25 + 7x / 25 ) = 12600
10x / 25 = 12600
x = 12600 x 25 / 10
x = 31500
So, sum he borrowed = Rs. 31500
Example 4:
What is the amount of Rs.16000 at 5% per annum compound interest in 3 years?
Answer :
Time = 3
rate = 5%
16000 x ( 105 / 100 ) = 16000 x 1157625 / 1000000
= 18522
So the amount is 18522.
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When we borrowed money from some one or we lent out some money for a some certain period is called the Principle or Sum. So here we find the Principle or Sum based question tricks.here is amount is given and time, and rate percant is given we just use formula and obtain the principle or sum.
Find Principle or Sum based question
Example 1:
Samar take a sum from Anup at simple interest at 25x / 2 per annum and amounts to Rs.3202.50 after 6 years.Find the Sum or Principle taken by Samar from Anup .
Answer :
First We consider sum is x and Rate percent is 25x / 2 and Time is 6 years, So
Step 1:Then S.I. = Rs. P X R X T / 100 = 3x / 4.
Step 2: Amount = Sum + Simple Interest = x + 3x / 4 = 7x / 4.
Step 3: 7x / 4 = 3202.50 and x = 3202.50 X 4 / 7 = 1830.
Samar taken sum from Anup is 1830.
Example 2:
Suresh take a sum of money at simple interest amounts to Rs.985 in 2 years and to Rs. 885 in 3 years.Find The sum of money suresh was taken.
Answer :
Step 1: Simple interest in 1 year is = Rs.( 985 - 885 ) = 100.
Step 2: Simple Interest in 2 years = Rs.100 X 2 = 200.
Step 3: So, Principle = ( 985 - 200 ) = 785.
Example 3:
John borrowed some money at the rate of 4% p.a for the First 3 years. at rate of 7% p.a. for the next 4 years. If he pays a total interest of Rs. 12,600 at the end of seven years, how much money did he borrow?
Answer :
Let sum borrowed x then P = x
( P X R X T / 100 )
( x X 4 X 3 / 100) + ( x X 7 X 4 / 100) = 12600
( 3x / 25 + 7x / 25 ) = 12600
10x / 25 = 12600
x = 12600 x 25 / 10
x = 31500
So, sum he borrowed = Rs. 31500
Example 4:
What is the amount of Rs.16000 at 5% per annum compound interest in 3 years?
Answer :
Time = 3
rate = 5%
16000 x ( 105 / 100 ) = 16000 x 1157625 / 1000000
= 18522
So the amount is 18522.
- Find Simple interest based question
- Find The rate % based question
- Compound Interest shortcut tricks
- << Go back to SI and CI main page
We provide few shortcut tricks on this topic. Please visit this page to get updates on more Math Shortcut Tricks. You can also like our facebook page to get updates.
If You Have any question regarding this topic then please do comment on below section. You can also send us message on facebook.
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