There were 76 persimmons and apples in a stall at first. After
17 of the persimmons and
12 of the apples were sold, there were a total of 58 persimmons and apples now. How many persimmons were there at first?
| |
Persimmons |
Apples |
Total |
| Before |
7 u |
2 p |
76 |
| Change |
- 1 u |
- 1 p |
- 18 |
| After |
6 u |
1 p |
58 |
Total number of persimmons and apples sold
= 76 - 58
= 18
6 u + 1 p = 58
1 p = 58 - 6 u --- (1)
1 u + 1 p = 18
1 p = 18 - 1 u --- (2)
(2) = (1)
18 - 1 u = 58 - 6 u
6 u - 1 u = 58 - 18
5 u = 40
1 u = 40 ÷ 5 = 8
Number of persimmons at first
= 7 u
= 7 x 8
= 56
Answer(s): 56
