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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?
OOPS, your answer is incorrect
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?
OOPS, your answer is incorrect
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?
OOPS, your answer is incorrect
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.