Question

62. A and B.can do a work in 12 days and 24
days respectively. They worked together for
4 days, but after 4 days B left. How long will
it be taken by A to complete the remaining
work?
a) 8 days
c) 6 days
d) 7 days.
by 5 days​

Answer 1

Answer:

6 days

Step-by-step explanation:

In one day A can do : 1/12 th of work.

In one day B can do : 1/24 th of work.

In one day A+B can do : 1/12 +1/24

= 3/24 = 1/8 th of work.

In 4 days (A + B ) will do : 4x 1/8 = 1/2

i.e half the work .

A can do full work in 12 days.

Hence A will do half the work in

12/2 = 6 days.