Question

1. Ram can finish a piece of work in
12 days while Raju can do it in
20 days. If both work it together,
what time will they take to do the
work?​

Answer 1

Answer: it will take 20 days.because when they work together Ram will finish it fast,but Raju need 20 days . So after Ram's work Raju will do it

Answer 2

Time taken to finish a piece of work by ram =1/12 days

Time taken to finish a

piece of work by raju =1/20 days

Time taken when both

do the work together =1/12+1/20

=5/60+3/60

=8/60

=2/15

=1/7.5

time taken to finish the

work if they do together = 7 . 5 days