Question

A is thrice good as b together they finish work in 9 days in how many days a separately done it

Answer 1

Solution 1

Let work done by B in 1 day = x

Then, work done by A in 1 day = 2x

Therefore, work done by A and B in 1 day = x+2x=3x

Given, A and B can finish the work in 18 days

=> Work done by A and B in 1 day =

1

18

=> 3x=

1

18

=> x=

1

54

Therefore, B alone can finish the work in 54 days