A container measuring 23 cm by 15 cm by 50 cm was
15 filled with water at first. Neave poured some water into the container. In the end, the height of the water level in the container was 18 cm as shown.
- How much water did Neave pour into container? Give your answer in mℓ.
- Neave then poured all the water in the container into several identical bottles. Given that each bottle can hold at least 1.4 ℓ of water, what is the least number of bottles he would need?
(a)
Height of water in the container at first
=
15 x 50
= 10 cm
Increase in the height of water in the container
= 18 - 10
= 8 cm
Volume of water poured into the container
= 23 x 15 x 8
= 2760 mℓ
(b)
Volume of the water after some water was poured in
= 23 x 15 x 18
= 6210 cm
3
1.4 ℓ = 1400 mℓ
Number of bottles
= 6210 ÷ 1400
= 4 r 610
Least number of bottles that he would need
= 4 + 1
= 5
Answer(s): (a) 2760 mℓ; (b) 5