Question

A can do a piece of work in 20 days . B can do in 30 days. if both of them work together how many days will they be able to finish the work​

Answer 1

12 days is the answer
1 day work of A=1/20
1 day work of B=1/30
1 day work of A+B=1/20+ 1/30= 5/60
thus, it can be inferred that total work to be completed is 60 and each day work of (A+B) is 5.
Hence, to complete total work i.e 60, they would require 12 days since 5×12=60

Answer 2

12 days is the correct solution