Question

37. A is 40% more efficient than B and both can complete
a work in 20 days. A and B start work and do it for
eight day. If remaining work is complete by C in 24
days, then find in how many days C will complete
work alone
(a) 30 days (b) 24 day (c) 20 days
(d) 16 days (e) 40 days​

Answer 1

Step-by-step explanation:

A : B

7 : 5

total work = 12×20

=240

for 8 days = 12×8

=96W

rem. = 240-96

= 144 W

C efficiency =144/24

=6

C = 240/6

=40 days

option {e}