Question

pipes A and B can fill a water tank at the rate of 480 litre/hour, and 560 litre/hour. pipe C empties the tank at the rate of 640 liters/hour. if the three pipes are opened simultaneously, the empty tank was filled in 15 hours. what is the capacity of the tank? 1)4500litres 2)5000litres 3)5400liters 4)6000liters 5)none

Answer 1

Answer:

water filled by tank A in 1 hrs=480L

water filled by tank A in 15 hrs=480L*15

=7200L

water filled by tank B in 1 hrs =560

water filled by tank B in 15 hrs=560L*15

=8410L

water filled by tank C in 1 hrs = 640L

water filled by tank C in 15 hrs =640L* 15

=9600

capacity of tank=7200L +8410L+9600L=25210L

hope it will help you

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Answer 2

Answer:

6000L option (4)

step by step explanation:

quantity of water ( A+B+C) together can fill into the tank in 1 hour = (480+560) - 640

= 400 L

capacity of the tank=400×15= 6000 L