There were 58 persimmons and pears in a stall at first. After
14 of the persimmons and
12 of the pears were sold, there were a total of 36 persimmons and pears now. How many persimmons were there at first?
|
Persimmons |
Pears |
Total |
Before |
4 u |
2 p |
58 |
Change |
- 1 u |
- 1 p |
- 22 |
After |
3 u |
1 p |
36 |
Total number of persimmons and pears sold
= 58 - 36
= 22
3 u + 1 p = 36
1 p = 36 - 3 u --- (1)
1 u + 1 p = 22
1 p = 22 - 1 u --- (2)
(2) = (1)
22 - 1 u = 36 - 3 u
3 u - 1 u = 36 - 22
2 u = 14
1 u = 14 ÷ 2 = 7
Number of persimmons at first
= 4 u
= 4 x 7
= 28
Answer(s): 28