SOLUTION: A pump is used to fill empty tanks with oil. It takes 27 minuets to fill 6 tanks when the flow rate is 5 litres per second. Calculate how long it would take to fill 8 of these t

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A pump is used to fill empty tanks with oil. It takes 27 minuets to fill 6 tanks when the flow rate is 5 litres per second. Calculate how long it would take to fill 8 of these t      Log On


   

Question 1096738: A pump is used to fill empty tanks with oil. It takes 27 minuets to fill 6 tanks when the flow rate is 5 litres per second.
Calculate how long it would take to fill 8 of these tanks when the flow rate is 9 litres per second.
Answer by Alan3354(69443) About Me  (Show Source):
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A pump is used to fill empty tanks with oil. It takes 27 minuets to fill 6 tanks when the flow rate is 5 litres per second.
Calculate how long it would take to fill 8 of these tanks when the flow rate is 9 litres per second.
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Each tank takes (27/6) = 9/2 minutes at 5L/sec
Tank = (9/2)*60*5 liters = 1350 liters
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At 9 L/sec:
1350/9 = 150 sec/tank
x8 = 1200 seconds = 20 minutes