Question
Mathematics Question on Time and Work
A tank can be filled by one tap in 10 minutes and by another in 30 minutes. Both the taps are kept open for 5 minutes and then the first one is shut off. In how many minutes more is the tank completely filled?
A
5
B
7.5
C
10
D
12
Answer
10
Explanation
Solution
The correct option is (C): 10