Question

13) Tap A can fill a tank in 20 min., Tap B in 30 min. But Tap C can empty the tank in 12 mm. All taps are
opened when the tank is full. In how much time will it be empty?
a) 1 hr.
b) 40 min.
c) 24 min.
d) Never
14) A train 200 min​

Answer 1

Answer: 24 min.

Step-by-step explanation: