There were 108 persimmons and pomegranates in a stall at first. After
14 of the persimmons and
12 of the pomegranates were sold, there were a total of 72 persimmons and pomegranates now. How many persimmons were there at first?
| |
Persimmons |
Pomegranates |
Total |
| Before |
4 u |
2 p |
108 |
| Change |
- 1 u |
- 1 p |
- 36 |
| After |
3 u |
1 p |
72 |
Total number of persimmons and pomegranates sold
= 108 - 72
= 36
3 u + 1 p = 72
1 p = 72 - 3 u --- (1)
1 u + 1 p = 36
1 p = 36 - 1 u --- (2)
(2) = (1)
36 - 1 u = 72 - 3 u
3 u - 1 u = 72 - 36
2 u = 36
1 u = 36 ÷ 2 = 18
Number of persimmons at first
= 4 u
= 4 x 18
= 72
Answer(s): 72
