Question

Two tap a and b fill cristen 10 and 15 min both the tap opene for 3 minutes

Answer 1

Answer:

Step-by-step explanation:

Part filled by A & B in 1 min = 1/10 + 1/15 =    3 + 2 / 30 = 5/30 = 1/6.

Hence A&B together can fill the tank in 6 minutes.

If both are open for 3 minutes, they fill 3/6 part = 1/2 part of the tank.