Container S and Container T had 49 kg of chilli powder and 151.2 kg of chilli powder respectively. If 2 kg of chilli powder from Container S and 8.1 kg of chilli powder from Container T are used every day, how many days later will the chilli powder in Container S be one-third as much as the chilli powder in Container T?
| |
Make p the same
(1)x3 = (3) |
Container S
(1) |
Container T
(2) |
| Before |
147 |
49 |
151.2 |
| Change |
- 6 u |
- 2 u |
- 8.1 u |
| After |
3 p |
1 p |
3 p |
49 - 2 u = 1 p --- (1)
151.2 - 8.1 u =
3 p --- (2)
Make p the same.
(1)
x3 = (3)
147 - 6 u =
3 p --- (3)
(2) = (3)
151.2 - 8.1 u = 147 - 6 u
8.1 u - 6 u = 151.2 - 147
2.1 u = 4.2
1 u = 4.2 ÷ 2.1 = 2
Time taken for the chilli powder in Container S to be one-third as much as the chilli powder in Container T = 2
Answer(s): 2
