A container measuring 20 cm by 15 cm by 51 cm was
13 filled with water at first. Billy poured some water into the container. In the end, the height of the water level in the container was 22 cm as shown.
- How much water did Billy pour into container? Give your answer in mℓ.
- Billy then poured all the water in the container into several identical jugs. Given that each jug can hold at least 1.2 ℓ of water, what is the least number of jugs 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
= 22 - 17
= 5 cm
Volume of water poured into the container
= 20 x 15 x 5
= 1500 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 15 x 22
= 6600 cm
3
1.2 ℓ = 1200 mℓ
Number of jugs
= 6600 ÷ 1200
= 5 r 600
Least number of jugs that he would need
= 5 + 1
= 6
Answer(s): (a) 1500 mℓ; (b) 6