Question
P and Q are two rectangular tanks. The base area of P is 75 cm2 while that of Q is 36 cm2 . At first, P contained water to a height of 31 cm and Q was empty, as shown.
  1. What was the volume of the water in P at first? 
  2. Oliver then poured some water from P to Q. After that, the height of the water level in P was twice that in Q.  What was the new height of the water level in P? 
3 m
(a)

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(b)

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P and Q are two rectangular tanks. The base area of P is 75 cm2 while that of Q is 36 cm2 . At first, P contained water to a height of 31 cm and Q was empty, as shown.
  1. What was the volume of the water in P at first? 
  2. Oliver then poured some water from P to Q. After that, the height of the water level in P was twice that in Q.  What was the new height of the water level in P?