Question

The ratio of days required by A and B to complete some work is 3: 5. It takes 5 * 5/8 days to complete the task. How many days does A alone make twice

Answer 1

Answer:

9 days

Step-by-step explanation:

Let one day work of 'A' = 1/3x

and one day work of 'B' = 1/5x

$\frac{1}{A} + \frac{1}{B} = \frac{1}{45/8}$

$\frac{1}{3x} + \frac{1}{5x} = \frac{8}{45}$

$\frac{8}{15x} = \frac{8}{45}$

∴ x=3

One day work of A = 1/9

Time taken by 'A' alone = 9 days