Shiyun had an equal number of mandarin oranges and dragon fruits at first. She sold one-third of the dragon fruits and bought another 56 mandarin oranges. In the end, she had five times as many mandarin oranges as dragon fruits. Find the number of dragon fruits she had at first.
| |
Dragon Fruits |
Mandarin Oranges |
| Before |
3 u |
10 u - 56 |
| Change |
- 1 u |
+ 56 |
| After |
2 u |
10 u |
The number of mandarin oranges and dragon fruits at first is the same.
10 u - 56 = 3 u
10 u - 3 u = 56
7 u = 56
1 u = 56 ÷ 7 = 8
Number of dragon fruits that she had at first
= 3 u
= 3 x 8
= 24
Answer(s): 24
