3
Q:
A) 8.7 hrs | B) 5.2 hrs |
C) 5 hrs | D) 7.5 hrs |
Answer: D) 7.5 hrs
Explanation:
Explanation:
Ratio of times taken by A and B = 160 : 100
A can do the work in 12 days
Let B can do the work in "D" days
=> 160:100 = 12 : D
=> D = 12 x 100/160 = 7.5 hrs