Gillian had an equal number of tomatoes and mandarin oranges at first. She sold half of the mandarin oranges and bought another 42 tomatoes. In the end, she had four times as many tomatoes as mandarin oranges. Find the number of mandarin oranges she had at first.
| |
Mandarin Oranges |
Tomatoes |
| Before |
2 u |
4 u - 42 |
| Change |
- 1 u |
+ 42 |
| After |
1 u |
4 u |
The number of tomatoes and mandarin oranges at first is the same.
4 u - 42 = 2 u
4 u - 2 u = 42
2 u = 42
1 u = 42 ÷ 2 = 21
Number of mandarin oranges that she had at first
= 2 u
= 2 x 21
= 42
Answer(s): 42
