Question

a can finished a work in 18 days and B can do the same work in half the time taken by a then working together what part of the same time they can finish in a day

Answer 1

Work A can do alone = 18 days

Work B can do alone = half of A

= 9 days

(A + B ) 's 1 day work

= 1 / 18 + 1 / 9

= 1 / 18 + 2 / 18

= 1 / 6

In 3 day = 3 * 1 / 6

= 1 / 2 work is completed

Answer 2

Answer:

Work A can do alone = 18 days

Work B can do alone = half of A

= 9 days

(A + B ) 's 1 day work

= 1 / 18 + 1 / 9

= 1 / 18 + 2 / 18

= 1 / 6

In 3 day = 3 * 1 / 6

= 1 / 2 work is completed