Initially tank was 3 5 filled After empty the tank by 30 liter using the tap S tap Q open to fill Ho...........

Quantitative Aptitude ( CCS) Pipes&cistern

Directions (): Study the pie chart carefully and answer the following questions.

Initially tank was 3/5 filled. After empty the tank by 30 liter using the tap S, tap Q open to fill. How much time tap Q takes to fill the tank?

1 hour 30 min

1 hour 40 min

1 hour 54 min

1 hour 25 min

1 hour 35 min

Water in tank = (3/5) × 400 = 240 l

Water in tank after closing tap S = 240 - 30 = 210 l

Amount need to fill = 400 - 210 = 190 l
For the flow rate of Q,

Amount of tank filled in 60 min = 25% of 400 = 100 l

Flow rate of tap Q = 100/60 = 5/3 l/m

∴ time taken to fill the tank = 190 × (3/5) = 114 min = 1 hour 54 min

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