Container C and Container D had 45 kg of curry powder and 159.3 kg of curry powder respectively. If 2 kg of curry powder from Container C and 8.7 kg of curry powder from Container D are used every day, how many days later will the curry powder in Container C be one-third as much as the curry powder in Container D?
| |
Make p the same
(1)x3 = (3) |
Container C
(1) |
Container D
(2) |
| Before |
135 |
45 |
159.3 |
| Change |
- 6 u |
- 2 u |
- 8.7 u |
| After |
3 p |
1 p |
3 p |
45 - 2 u = 1 p --- (1)
159.3 - 8.7 u =
3 p --- (2)
Make p the same.
(1)
x3 = (3)
135 - 6 u =
3 p --- (3)
(2) = (3)
159.3 - 8.7 u = 135 - 6 u
8.7 u - 6 u = 159.3 - 135
2.7 u = 24.3
1 u = 24.3 ÷ 2.7 = 9
Time taken for the curry powder in Container C to be one-third as much as the curry powder in Container D = 9
Answer(s): 9
