Container J and Container K had 49 kg of rice flour and 160.5 kg of rice flour respectively. If 2 kg of rice flour from Container J and 8.7 kg of rice flour from Container K are used every day, how many days later will the rice flour in Container J be one-third as much as the rice flour in Container K?
| |
Make p the same
(1)x3 = (3) |
Container J
(1) |
Container K
(2) |
| Before |
147 |
49 |
160.5 |
| Change |
- 6 u |
- 2 u |
- 8.7 u |
| After |
3 p |
1 p |
3 p |
49 - 2 u = 1 p --- (1)
160.5 - 8.7 u =
3 p --- (2)
Make p the same.
(1)
x3 = (3)
147 - 6 u =
3 p --- (3)
(2) = (3)
160.5 - 8.7 u = 147 - 6 u
8.7 u - 6 u = 160.5 - 147
2.7 u = 13.5
1 u = 13.5 ÷ 2.7 = 5
Time taken for the rice flour in Container J to be one-third as much as the rice flour in Container K = 5
Answer(s): 5
