A container measuring 30 cm by 25 cm by 51 cm was
13 filled with water at first. Warren poured some water into the container. In the end, the height of the water level in the container was 20 cm as shown.
- How much water did Warren pour into container? Give your answer in mℓ.
- Warren then poured all the water in the container into several identical bottles. Given that each bottle can hold at least 1.6 ℓ of water, what is the least number of bottles he would need?
(a)
Height of water in the container at first
=
13 x 51
= 17 cm
Increase in the height of water in the container
= 20 - 17
= 3 cm
Volume of water poured into the container
= 30 x 25 x 3
= 2250 mℓ
(b)
Volume of the water after some water was poured in
= 30 x 25 x 20
= 15000 cm
3
1.6 ℓ = 1600 mℓ
Number of bottles
= 15000 ÷ 1600
= 9 r 600
Least number of bottles that he would need
= 9 + 1
= 10
Answer(s): (a) 2250 mℓ; (b) 10