Question

82. If A and B together can complete a job in 15
days and B alone can complete it in 20 days.
In how many days can A alone complete job:
(A) 60
(B) 45
(C) 40
(D) 30
no​

Answer 1

Answer:

option A is the correct answer

Step-by-step explanation:

If you are really good at maths: It is a simple equation.First consider 1 day of work.

A→1/20

B→ Don’t know

A+B=1/15.

Thus, 1/20+1/B=1/15. If you solve this B would get 60. ( you need to be very strong in maths by watching the equation to find out 60 for B).

So in one day B would complete 1/60th work . To complete entire work he would take 60 days.