Gem had an equal number of chikoos and kiwis at first. She sold one-third of the kiwis and bought another 30 chikoos. In the end, she had thrice as many chikoos as kiwis. Find the number of kiwis she had at first.
| |
Chikoos |
Kiwis |
| Before |
6 u - 30 |
3 u |
| Change |
+ 30 |
- 1 u |
| After |
6 u |
2 u |
The number of chikoos and kiwis at first is the same.
6 u - 30 = 3 u
6 u - 3 u = 30
3 u = 30
1 u = 30 ÷ 3 = 10
Number of kiwis that Gem had at first
= 3 u
= 3 x 10
= 30
Answer(s): 30
