A container measuring 30 cm by 25 cm by 55 cm was
15 filled with water at first. Asher 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 Asher pour into container? Give your answer in mℓ.
- Asher then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.2 ℓ of water, what is the least number of flasks he would need?
(a)
Height of water in the container at first
=
15 x 55
= 11 cm
Increase in the height of water in the container
= 20 - 11
= 9 cm
Volume of water poured into the container
= 30 x 25 x 9
= 6750 mℓ
(b)
Volume of the water after some water was poured in
= 30 x 25 x 20
= 15000 cm
3
1.2 ℓ = 1200 mℓ
Number of flasks
= 15000 ÷ 1200
= 12 r 600
Least number of flasks that he would need
= 12 + 1
= 13
Answer(s): (a) 6750 mℓ; (b) 13