Question

satish can do a job in 15 days and kapil works teice as fast as satish . then in how many days can satish and kapil togther complete the job ?​

Answer 1

Answer:

they can together finish the job by 3 to 4 days

Answer 2

Step-by-step explanation:

Let time taken by B be 1, then time taken by A is 2.

Let time taken by C be 1, then time taken by A is 3.

A:B = 2:1

A:C = 3:1

Multiply above equations by 3 and 2 respectively.

A:B:C = 6:3:2

Time taken by A is 6x

Time taken by B is 3x

Time taken by C is 2x

Taking LCM as 12x which represent total work to be done.

A does 2 units/day

B does 4 units/day

C does 6 units/day

A+B+C in 1 day = 12 units

Time taken is 2 days as per the question.

12x/12=2

x= 2.

Time required by B to do the work alone is 6 days.

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