There is 215 mℓ more water in Container R than in Container Q. There is 285 mℓ less water in Container Q than in Container S. The total amount of water in the three containers is 1409 mℓ.
- How much more water is there in Container S than in Container R?
- How much water is there in Container Q?
(a)
Volume of Container Q = 1 u
Volume of Container R = 1 u + 215
Volume of Container S = 1 u + 285
Volume of more water in Container S than Container R
= 285 - 215
= 70 mℓ
(b)
Total volume in the 3 containers
= 1 u + 1 u + 215 + 1 u + 285
= 3 u + 500
3 u + 500 = 1409
3 u = 1409 - 500
3 u = 909
1 u = 909 ÷ 3 = 303
Volume of water in Container Q
= 1 u
= 303 mℓ
Answer(s): (a) 70 mℓ; (b) 303mℓ