Question

6. A, B and C can do a piece of work in 15, 12 and 20 days respectively. They started
the work together, but C left after 2 days. In how many days will the remaining work
be completed by A and B?​

Answer 1

Answer:

LCM is 60

Therefore A=4,B=5,C=3

A,B,C working together for 2 days.

4+5+3=12

For 2 days=12×2=24

Therefore,60-24=36

Now Remaining work is 36 and it is Done By A,B

Therefore A=4,B=5

A+B=4+5=9

Therefore,36/9=4

By A and B it's completed in 4Days.

Answer 2

Answer:

If A:15 B:12 and C:20

But C:2

Step-by-step explanation:

The many days remaining work

A:5 B:6