A does 20% less than b. if a can finish a piece of work in 15/2 hours, then b can finish it in (a) 5 hours (b) 11/2 hours (c) 6 hours (d) 13/2 hours
Answers
Answered by
139
Solution:-
Ratio of percentage of work done by A and B = 80 : 100
Suppose B takes 'x' hours time to complete the work.
So,
⇒ 80 : 100 :: x : 15/2
⇒ 100x = 15/2*80
⇒ x = 600/100
⇒ x = 6 hours (Time taken by B)
So, the option (c) is correct.
Ratio of percentage of work done by A and B = 80 : 100
Suppose B takes 'x' hours time to complete the work.
So,
⇒ 80 : 100 :: x : 15/2
⇒ 100x = 15/2*80
⇒ x = 600/100
⇒ x = 6 hours (Time taken by B)
So, the option (c) is correct.
Answered by
26
c is correct as b can do in 6 hours
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