Question

7 1 2 를
hours. then B can
finish it in
taj o
{al 5 hours
(b) 5 hours
(c) 6 hours
a) 6-hours
2
Hint. Ratio of work done by A and B = inverse ratio of ame taken by A and B.
11. A does 20% less work than B. IA can finish a piece of work in 7​

Answer 1

Here you are my friend

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.

I hope this helps Good Luck my friend!!!!!!