Direct and Inverse Proportions - Grade 8 (Question: 1613051182)
There are few taps and holes in tank. Each tap can fill empty tank in 10 minutes, while each hole can empty a full tank in 15 minutes. If there are 3 taps and 2 holes, how long would it take to fill empty tank?
A. 9 minutes
B. 6 minutes
C. 8 minutes
D. 4 minutes