Vijay can do a certain work in 16 days. Subham is 60% more efficient than Viajy. How many days dose Subham alone take to do the same work?
OPtion
1) 12 days
2) 11 days
3) 14 days
4) 9.5 days
5) 13 days
6) 10 days
7) 15 days
8) 8 days
9) 16 days
10) None of the above
Solution
Ratio of time taken by Vijay and Subham = 160 : 100 = 8 : 5
Suppose Subham alone takes x days to the work = 8 : 5 : : 16 : x
= > 8x = 80
x = 80/8 = 10 days
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