Question

01 - A can do a bit of work in 8 days,
which B alone can do in 10 days in how
long . In how long both cooperating
can do it?​

Answer 1

Answer:

Step-by-step explanation:

Q 1 - A can do a bit of work in 8 days, which B alone can do in 10 days in how long . In how long both cooperating can do it?

A - 40/9 days

B - 41/9 days

C - 42/9 days

D - 43/9 days

Answer - A

Explanation

A's 1 day work= 1/8, B`s 1 day work = 1/10

∴ (A+B) 1 day work = (1/8+1/10) = 9/40

Both cooperating can complete it in 40/9 days