The ratio of the number of tarts in Container G to the number of tarts in Container H was 7 : 5. 10% of the tarts in Container G and 0.7 of those in Container H were mango. After transferring the tarts between the 2 boxes, the number of chocolate tarts in both boxes are the same. Likewise, the number of mango tarts in both boxes are the same. If a total of 247 tarts were moved, how many more tarts were there in Container G than Container H at first?
Container G |
Container H |
7 u |
5 u |
Mango |
Chocolate |
Mango |
Chocolate |
0.7 u |
6.3 u |
3.5 u |
1.5 u |
+ 1.4 u |
- 2.4 u |
- 1.4 u |
+ 2.4 u |
2.1 u |
3.9 u |
2.1 u |
3.9 u |
Number of mango tarts in Container G
= 10% x 7 u
=
10100 x 7 u
= 0.7 u
Number of chocolate tarts in Container G
= 7 u - 0.7 u
= 6.3 u
Number of mango tarts in Container H
= 0.7 x 5 u
= 3.5 u
Number of chocolate tarts in Container H
= 5 u - 3.5 u
= 1.5 u
Number of mango tarts in each box in the end
= (0.7 u + 3.5 u) ÷ 2
= 4.2 u ÷ 2
= 2.1 u
Number of chocolate tarts in each box in the end
= (6.3 u + 1.5 u) ÷ 2
= 7.8 u ÷ 2
= 3.9 u
Number of tarts moved
= 1.4 u + 2.4 u
= 3.8 u
3.8 u = 247
1 u = 247 ÷ 3.8 = 65
Number of more tarts in Container G than Container H at first
= 7 u - 5 u
= 2 u
= 2 x 65
= 130
Answer(s): 130