Time and Work Examples 1
Some important facts are needed for Time and work Problems. If a person do a piece of work which has to be require more time to complete, and capacity is limited to that person but two or more person do the same piece of work which require less time and effort is minimum. this examples is two person work a piece of work in same time and find out one person alone work to complete. So here is some example 1 of this chapter related which help you better study for job preparation.
Example 1:
Rajib and Rajesh together can complete a piece of work in 4 days. If Rajib alone can complete the same work in 12 days, In how many days can Rajesh alone complete that work?
Answer :
Rajib and Rajesh can do piece of work 4 day's, then
First we find required 1 day time and work,
( Rajib + Rajesh ) can do piece of work in 1 day's = 1 / 4, Rajib 1 day's work = 1 / 12.
Same work Rajesh can do in 1 day's = ( 1 / 4 - 1 / 12 ) = 1 / 6.
So, Rajesh can alone complete the work in 6 days.
Example 2:
subir and kabir can do a piece of work in 20 days and 12 days respectively.subir started the work alone and then after 4 days kabir joined him till the completion of the work.How long did the work last?
Answer :
Step 1:In 4 days subir work done = 1 x 4 / 20 = 1 / 5.and Remaining work is = ( 1 - 1 / 5 ) = 4 / 5.
Step 2:Now subir and kabir work done by 1 days = ( 1 / 20 + 1 / 12 ) = 2 / 15.
Step 3:4 / 5 work will be done by subir and kabir = ( 15 / 2 x 4 / 5 ) = 6 days.
So the total time taken = ( 6 + 4 ) = 10 days.
Example 3:
20 labour can do piece of work in 30 days, then how many days 15 labour can complete double of the work ?
Answer:
20 labour can do a piece of work in 30 days and Now we need to find the double of the work by 15 labour.
we use
= ( labour X working days ) = ( labour X working days )
= 20 x 30 = 15 x ?
= 600 = 15 x ?
? = 600 / 15 = 40
Now we need to double the working days is 40 x 2 = 80 days
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Some important facts are needed for Time and work Problems. If a person do a piece of work which has to be require more time to complete, and capacity is limited to that person but two or more person do the same piece of work which require less time and effort is minimum. this examples is two person work a piece of work in same time and find out one person alone work to complete. So here is some example 1 of this chapter related which help you better study for job preparation.
Example 1:
Rajib and Rajesh together can complete a piece of work in 4 days. If Rajib alone can complete the same work in 12 days, In how many days can Rajesh alone complete that work?
Answer :
Rajib and Rajesh can do piece of work 4 day's, then
First we find required 1 day time and work,
( Rajib + Rajesh ) can do piece of work in 1 day's = 1 / 4, Rajib 1 day's work = 1 / 12.
Same work Rajesh can do in 1 day's = ( 1 / 4 - 1 / 12 ) = 1 / 6.
So, Rajesh can alone complete the work in 6 days.
Example 2:
subir and kabir can do a piece of work in 20 days and 12 days respectively.subir started the work alone and then after 4 days kabir joined him till the completion of the work.How long did the work last?
Answer :
Step 1:In 4 days subir work done = 1 x 4 / 20 = 1 / 5.and Remaining work is = ( 1 - 1 / 5 ) = 4 / 5.
Step 2:Now subir and kabir work done by 1 days = ( 1 / 20 + 1 / 12 ) = 2 / 15.
Step 3:4 / 5 work will be done by subir and kabir = ( 15 / 2 x 4 / 5 ) = 6 days.
So the total time taken = ( 6 + 4 ) = 10 days.
Example 3:
20 labour can do piece of work in 30 days, then how many days 15 labour can complete double of the work ?
Answer:
20 labour can do a piece of work in 30 days and Now we need to find the double of the work by 15 labour.
we use
= ( labour X working days ) = ( labour X working days )
= 20 x 30 = 15 x ?
= 600 = 15 x ?
? = 600 / 15 = 40
Now we need to double the working days is 40 x 2 = 80 days
- Time and work Examples 2
- Time and work Examples 3
- Time and Work Examples 4
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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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