There were 66 persimmons and lemons in a stall at first. After
16 of the persimmons and
12 of the lemons were sold, there were a total of 47 persimmons and lemons now. How many persimmons were there at first?
| |
Persimmons |
Lemons |
Total |
| Before |
6 u |
2 p |
66 |
| Change |
- 1 u |
- 1 p |
- 19 |
| After |
5 u |
1 p |
47 |
Total number of persimmons and lemons sold
= 66 - 47
= 19
5 u + 1 p = 47
1 p = 47 - 5 u --- (1)
1 u + 1 p = 19
1 p = 19 - 1 u --- (2)
(2) = (1)
19 - 1 u = 47 - 5 u
5 u - 1 u = 47 - 19
4 u = 28
1 u = 28 ÷ 4 = 7
Number of persimmons at first
= 6 u
= 6 x 7
= 42
Answer(s): 42
