Question

a pump lifts 216 litres of water in 1 h 12 m how much volume of water if can lift in 30 minute​

Answer 1

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1h = 60 minutes

1h 12 minutes = 60 + 12 = 72 minutes

Water pumped in 72 minutes = 216 L

Water pumped in 1 minute = 216/72 = 3 L

Water pumped in 30 minutes = 30 × 3 L = 90 L