Question

A and B together can finish a piece of work in 15 days. If ‘B’ alone can finish the same work in 20 days , in how many days ‘A’ alone can finish it?

Answer 1

Step-by-step explanation:

let a complete the work in x days then,

1/20 + 1/x =1/15

(x+20)/20x = 1/15

15x + 300 = 20x

300 = 5x

x = 60

A can complete the work in 60 days.

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