Lee and Gabriel each had the same volume of water. The water was used to pour into identical bottles. Lee filled up 13 bottles and had 7.5 ℓ of water left. Gabriel filled up 9 bottles and had 9.5 ℓ of water left.
- What was the capacity of each bottle? Give your answer in millilitres.
- What was the total volume of water Lee and Gabriel had at first? Give your answer in litres.
(a)
Difference between the number of bottles
= 13 - 9
= 4
Difference between the volume of water left
= 9.5 - 7.5
= 2 ℓ
Volume of 4 bottles = 2 ℓ
Volume of 1 bottle
= 2 ÷ 4
= 0.5 ℓ
1 ℓ = 1000 mℓ
0.5 ℓ = 0.5 x 1000 = 500 mℓ
(b)
Volume of 9 bottles
= 9 x 0.5
= 4.5 ℓ
Volume of water that Gabriel had at first
= 4.5 + 9.5
= 14 ℓ
Total volume of water that Lee and Gabriel had at first
= 2 x 14
= 28 ℓ
Answer(s): (a) 500 mℓ (b) 28 ℓ