At a supermarket, the ratio of peaches to avocados was 9 : 10. After Shiyun bought three-fifths of the avocados, there was a total of 104 peaches and avocados left at the supermarket. How many fruits were there at first?
| |
Peaches |
Avocados |
Total |
Comparing peaches
and avocados at first |
9x1 =
9 u |
10x1 =
10 u |
19 u |
Before |
|
5x2 =
10 u |
|
Change |
|
- 3x2 =
- 6 u |
|
After |
9 u |
2x2 =
4 u |
104 |
The number of avocados at first is repeated. Make the number of avocados at first the same. LCM of 10 and 5 is 10.
Total number of fruits left
= 9 u + 4 u
= 13 u
13 u = 104
1 u = 104 ÷ 13 = 8
Number of fruits at first
= 9 u + 10 u
= 19 u
= 19 x 8
= 152
Answer(s): 152
