Natalie had an equal number of coconuts and mandarin oranges at first. She sold one-third of the mandarin oranges and bought another 50 coconuts. In the end, she had four times as many coconuts as mandarin oranges. Find the number of mandarin oranges she had at first.
| |
Mandarin Oranges |
Coconuts |
| Before |
3 u |
8 u - 50 |
| Change |
- 1 u |
+ 50 |
| After |
2 u |
8 u |
The number of coconuts and mandarin oranges at first is the same.
8 u - 50 = 3 u
8 u - 3 u = 50
5 u = 50
1 u = 50 ÷ 5 = 10
Number of mandarin oranges that she had at first
= 3 u
= 3 x 10
= 30
Answer(s): 30
