Tammy had an equal number of grapefruits and passion fruits at first. She sold one-third of the passion fruits and bought another 20 grapefruits. In the end, she had four times as many grapefruits as passion fruits. Find the number of passion fruits she had at first.
| |
Grapefruits |
Passion Fruits |
| Before |
8 u - 20 |
3 u |
| Change |
+ 20 |
- 1 u |
| After |
8 u |
2 u |
The number of grapefruits and passion fruits at first is the same.
8 u - 20 = 3 u
8 u - 3 u = 20
5 u = 20
1 u = 20 ÷ 5 = 4
Number of passion fruits that Tammy had at first
= 3 u
= 3 x 4
= 12
Answer(s): 12
