If Ram and Shyam together can build a house in 10 days; Ram and Arun can build it together in 12 days and Shyam and Arun can build it in 15 days. Shyam, Ram and Arun start working together. In how many days they build the house?
a. 6 days
b. 4 days
c. 8 days
d. 12 days
ANSWER: 8 days
Explanation:
Post a Comment