The number of green grapes is the same as the number of red grapes in a bag. After removing
18 of the grapes, there were 38 green grapes and 172 red grapes left in the bag. Then, another 69 green grapes and 69 red grapes were removed and there were
310 of the grapes left in the end. How many green grapes were removed altogether?
|
Green Grapes |
Red Grapes |
Total |
Before |
1 p 120 |
1 p 120 |
10 u |
Change 1 |
- ? (18 of the total) |
- 7 u |
After 1 |
38 |
172 |
Change 2 |
- 69 |
- 69 |
After 2 |
72 |
3 u |
Number of grapes left
= 38 + 172 - 69 - 69
= 72
3 u = 72
1 u = 72 ÷ 3 = 24
Total number of grapes at first
= 10 u
= 10 x 24
= 240
Number of green grapes at first
= 240 ÷ 2
= 120
Number of green grapes removed at first
= 120 - 38
= 82
Total number of green grapes removed
= 82 + 69
= 151
Answer(s): 151