Water tank

The block-shaped tank is 2.5 m long, 100 cm wide and 12 dm high. In how many minutes will it be filled with water to two thirds if 40 liters of water flow into the tank per minute?

Correct answer:

t =  50 min

Step-by-step explanation:

a=2.5 m b=100 cm m=100:100  m=1 m c=12 dm m=12:10  m=1.2 m  V1=a b c=2.5 1 1.2=3 m3 V2=32 V1=32 3=2 m3  Q=40 l/min  V3=V2 l=V2 1000  l=2 1000  l=2000 l  t=V3/Q=2000/40=50 min

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