Zoe had an equal number of pears and plums at first. She sold two-thirds of the plums and bought another 60 pears. In the end, she had five times as many pears as plums. Find the number of plums she had at first.
| |
Plums |
Pears |
| Before |
3 u |
5 u - 60 |
| Change |
- 2 u |
+ 60 |
| After |
1 u |
5 u |
The number of pears and plums at first is the same.
5 u - 60 = 3 u
5 u - 3 u = 60
2 u = 60
1 u = 60 ÷ 2 = 30
Number of plums that she had at first
= 3 u
= 3 x 30
= 90
Answer(s): 90
