Question

P,Q and R work together to complete a piece of work in x days. P and R take 20 days and 30 days respectively to complete the work. Q is faster than R and slower than P. If x is an integer, then how many values can it take ?
1) 1
2) 2
3) 3
4) 4

Answer 1

Answer:

Sorry I didn't know the answer of this question