Betty had an equal number of guavas and oranges at first. She sold half of the oranges and bought another 84 guavas. In the end, she had five times as many guavas as oranges. Find the number of oranges she had at first.
| |
Oranges |
Guavas |
| Before |
2 u |
5 u - 84 |
| Change |
- 1 u |
+ 84 |
| After |
1 u |
5 u |
The number of guavas and oranges at first is the same.
5 u - 84 = 2 u
5 u - 2 u = 84
3 u = 84
1 u = 84 ÷ 3 = 28
Number of oranges that she had at first
= 2 u
= 2 x 28
= 56
Answer(s): 56
