Question

1. A can do a work in 20 days and B alone can do
the same work in 30 days. If they work together
is how many days will they complete the work?​

Answer 1

Step-by-step explanation:

they can

do the work

for 10 days

Answer 2

Answer:

If both work together then they can complete the work in 12 days

Step-by-step explanation:

A can finish a piece of work in = 20 days

then, A's 1 day work= 1/20

B can finish the same work in = 30 days

then,B's 1 day work=1/30

Now,

A and B can finish the same work in = (1/20+1/30) = 1/12

Hence, A and B can together finish the same work in 12 days