Cathy had four containers, E, F, G and H which contained a total of 277 pomegranates. She transferred 41 pomegranates from Container E to Container F, 90 pomegranates from Container F to Container G and 190 pomegranates from Container G to Container H. The ratio of the number of pomegranates in Container E to Container F to Container G changed from 4 : 5 : 11 to 1 : 2 : 7. How many pomegranates were in Container H at first?
|
Make p the same (1)x2 = (3) |
E (1) |
F (2) |
G
|
H
|
Before |
8 u |
4 u |
5 u |
11 u |
? |
Change 1 |
- 82 |
- 41 |
+ 41 |
|
|
Change 2 |
|
|
- 90 |
+ 90 |
|
Change 3 |
|
|
|
- 190 |
+ 190 |
After |
2 p |
1 p |
2 p |
7 p |
? |
4 u - 41 = 1 p --- (1)
5 u + 41 - 90 = 2 p
5 u - 49 =
2 p --- (2)
(1)
x 2 8 u - 82 =
2 p --- (3)
Make p the same.
(3) = (2)
8 u - 82 = 5 u - 49
8 u - 5 u = 82 - 49
3 u = 33
1 u = 33 ÷ 3 = 11
Total number of pomegranates in Container E, Container F and Container G
= 4 u + 5 u + 11 u
= 20 u
Total number of pomegranates in Container H at first
= 277 - 20 u
= 277 - 20 x 11
= 277 - 220
= 57
Answer(s): 57