Question

30. Mr. A completes a work in 10 days. Mr. B completes the same work in 15
days. If they work together, how many will it take them to complete the
work?

a) 4
b) 5
c) 6
d) 7​

Answer 1

Answer:

1/10+1/15=3/30+2/30=5/30=1/6

6 days