# Aptitude - Aptitude-Time And Works

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Kim can do a work in 3 days while David can do the same work in 2 days. Both of them finish the work together and get Rs.150. What is the share of Kim?

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• b
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Kim\'s wages : David\'s wages    = Kim\'s 1 day\'s work : David\'s 1 day\'s work
= 1/3 : 1/2
= 2 : 3
Kim\'s share    = Rs.(2/5×150)
=Rs.60.

Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by tanya to do the same piece of work is?

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• b
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Ratio of times taken by Sakshi and Tanya=125:100
= 5 : 4.
Suppose Tanya takes x days to do the work.
5 : 4 ::20 : x
x<=> (4×20/5)
<=> 16 days.

A man can do a piece of work in 5 days, but with the help pf his son, he can do it in 3 days. In what time can the son do it alone?

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• b
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Son\'s 1 day\'s work    = (1/3-1/5)
=2/15.
The son alone can do the work in     = 15/2
=7x1/2 days.

A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was?

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• b
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A and B can together finish a work in 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the job?

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• b
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• d