Esther had an equal number of avocados and coconuts at first. She sold one-third of the coconuts and bought another 70 avocados. In the end, she had five times as many avocados as coconuts. Find the number of coconuts she had at first.
| |
Coconuts |
Avocados |
| Before |
3 u |
10 u - 70 |
| Change |
- 1 u |
+ 70 |
| After |
2 u |
10 u |
The number of avocados and coconuts at first is the same.
10 u - 70 = 3 u
10 u - 3 u = 70
7 u = 70
1 u = 70 ÷ 7 = 10
Number of coconuts that she had at first
= 3 u
= 3 x 10
= 30
Answer(s): 30
