Question

8. A works twice as fast as B. They work together and complete a job in 8 days how long
would A take to complete the job?

​

Answer 1

Ratio of Rate of working of A & B = 2:1

Ratio of time taken is = 1:2

Let x day taken by A.

So,;2 day taken to work (

x

1

)

th

and 2x day by B

1 day →(

2x

1

)

th

1 day →

x

1

+

2x

1

=

2x

3

8 day →

2x

8×3

2x

8×3

=1

x=12 day

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