Question
Billy and Elijah each had the same volume of water. The water was used to pour into identical bottles. Billy filled up 13 bottles and had 4.9 ℓ of water left. Elijah filled up 7 bottles and had 9.1 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 Elijah had at first? Give your answer in litres.
4 m
(a)

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Billy and Elijah each had the same volume of water. The water was used to pour into identical bottles. Billy filled up 13 bottles and had 4.9 ℓ of water left. Elijah filled up 7 bottles and had 9.1 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 Elijah had at first? Give your answer in litres.