Question

Example: A alone takes 9 days more than the time taken by A and B together. B alone takes
16 days more than the time taken by A and B to do the work. Find the time A and B together
take to finish the work.
(a) 25 days
(b) 15 days
(c) 7 days
(d) 12 days
Sol. (d) Required time = 19*16= 12 days.​

Answer 1

Answer:

Explanation:Their combined 4 day work = 4(1/10 + 1/15) = 12/20 = 3/5.

Remaining work = 1 – 3/5 = ⅖.

This means C did 2/5 work in 4 days, hence he can finish the complete work in 5/2 × 4 = 10 days.

Answer 2

15 days i think this correct answer