A container measuring 28 cm by 21 cm by 51 cm was
13 filled with water at first. Tommy 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 Tommy pour into container? Give your answer in mℓ.
- Tommy then poured all the water in the container into several identical jugs. Given that each jug can hold at least 1.6 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
= 20 - 17
= 3 cm
Volume of water poured into the container
= 28 x 21 x 3
= 1764 mℓ
(b)
Volume of the water after some water was poured in
= 28 x 21 x 20
= 11760 cm
3
1.6 ℓ = 1600 mℓ
Number of jugs
= 11760 ÷ 1600
= 7 r 560
Least number of jugs that he would need
= 7 + 1
= 8
Answer(s): (a) 1764 mℓ; (b) 8