Question
Billy and Tommy each had the same volume of water. The water was used to pour into identical bottles. Billy filled up 15 bottles and had 4.5 ℓ of water left. Tommy filled up 7 bottles and had 6.9 ℓ of water left.
  1. What was the capacity of each bottle? Give your answer in millilitres.
  2. What was the total volume of water Billy and Tommy had at first? Give your answer in litres.
4 m
(a)

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Billy and Tommy each had the same volume of water. The water was used to pour into identical bottles. Billy filled up 15 bottles and had 4.5 ℓ of water left. Tommy filled up 7 bottles and had 6.9 ℓ of water left.
  1. What was the capacity of each bottle? Give your answer in millilitres.
  2. What was the total volume of water Billy and Tommy had at first? Give your answer in litres.