A container measuring 20 cm by 15 cm by 51 cm was
13 filled with water at first. Wesley poured some water into the container. In the end, the height of the water level in the container was 23 cm as shown.
- How much water did Wesley pour into container? Give your answer in mℓ.
- Wesley then poured all the water in the container into several identical jugs. Given that each jug can hold at least 1.3 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
= 23 - 17
= 6 cm
Volume of water poured into the container
= 20 x 15 x 6
= 1800 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 15 x 23
= 6900 cm
3
1.3 ℓ = 1300 mℓ
Number of jugs
= 6900 ÷ 1300
= 5 r 400
Least number of jugs that he would need
= 5 + 1
= 6
Answer(s): (a) 1800 mℓ; (b) 6