Julie had an equal number of dragon fruits and dates at first. She sold one-third of the dates and bought another 45 dragon fruits. In the end, she had thrice as many dragon fruits as dates. Find the number of dates she had at first.
| |
Dates |
Dragon Fruits |
| Before |
3 u |
6 u - 45 |
| Change |
- 1 u |
+ 45 |
| After |
2 u |
6 u |
The number of dragon fruits and dates at first is the same.
6 u - 45 = 3 u
6 u - 3 u = 45
3 u = 45
1 u = 45 ÷ 3 = 15
Number of dates that she had at first
= 3 u
= 3 x 15
= 45
Answer(s): 45
