A container measuring 25 cm by 19 cm by 55 cm was
15 filled with water at first. Japheth poured some water into the container. In the end, the height of the water level in the container was 16 cm as shown.
- How much water did Japheth pour into container? Give your answer in mℓ.
- Japheth then poured all the water in the container into several identical bottles. Given that each bottle can hold at least 1.3 ℓ of water, what is the least number of bottles 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
= 16 - 11
= 5 cm
Volume of water poured into the container
= 25 x 19 x 5
= 2375 mℓ
(b)
Volume of the water after some water was poured in
= 25 x 19 x 16
= 7600 cm
3
1.3 ℓ = 1300 mℓ
Number of bottles
= 7600 ÷ 1300
= 5 r 1100
Least number of bottles that he would need
= 5 + 1
= 6
Answer(s): (a) 2375 mℓ; (b) 6