Question

A can do a job in 15 days, and B can do the job in 10 days. how many days will they take to finish the job if they wirk together? plss answer with proper solution...... i will mark them brainlist if there ans satisfied me.... pls ans fast​

Answer 1

(A + B)'s 1 day's work = ( 1 + 1 ) = 1 .

15 10 6

Work done by A and B in 2 days = ( 1 x 2 ) = 1 .

6 3

Remaining work = ( 1 - 1 ) = 2 .

3 3

Now, 1 work is done by A in 1 day.

15

Therefore 2 work will be done by a in ( 15 x 2 ) = 10 days.

3 3

Hence, the total time taken = (10 + 2) = 12 days

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