A fruit stall had 4 times as many grapefruits as kiwis. After 7 grapefruits were added, the number of grapefruits became 19 more than the number of kiwis. How many kiwis were there at the fruit stall at first?
| |
Grapefruits |
Kiwis |
| Before |
4 u |
1 u |
| Change |
+ 7 |
|
| After |
4 u + 7 |
1 u |
If another 7 kiwis are added, the number of grapefruits and kiwis will be the same.
4 u + 7 = 1 u + 19
4 u - 1 u = 19 - 7
3 u = 12
1 u = 12 ÷ 3 = 4
Number of kiwis at the fruit stall at first
= 1 u
= 4
Answer(s): 4
