Container E and Container F had 45 kg of rice flour and 141.5 kg of rice flour respectively. If 2 kg of rice flour from Container E and 7.3 kg of rice flour from Container F are used every day, how many days later will the rice flour in Container E be one-third as much as the rice flour in Container F?
|
Make p the same (1)x3 = (3) |
Container E (1) |
Container F (2) |
Before |
135 |
45 |
141.5 |
Change |
- 6 u |
- 2 u |
- 7.3 u |
After |
3 p |
1 p |
3 p |
45 - 2 u = 1 p --- (1)
141.5 - 7.3 u =
3 p --- (2)
Make p the same.
(1)
x3 = (3)
135 - 6 u =
3 p --- (3)
(2) = (3)
141.5 - 7.3 u = 135 - 6 u
7.3 u - 6 u = 141.5 - 135
1.3 u = 6.5
1 u = 6.5 ÷ 1.3 = 5
Time taken for the rice flour in Container E to be one-third as much as the rice flour in Container F = 5
Answer(s): 5