5
Q:
A) 120 | B) 240 |
C) 360 | D) 180 |
Answer: A) 120
Explanation:
Explanation:
1/15 + 1/12 + 1/R = 1/6, we got R = 60 (it means R will take 60 days to complete the work alone)
so ratio of work done by P:Q:R = 1/15 : 1/12 : 1/60 = 5 : 4 : 1
so R share = (1/10) x 1200 = 120.