There were 102 mangoes and persimmons in a stall at first. After
16 of the mangoes and
12 of the persimmons were sold, there were a total of 83 mangoes and persimmons now. How many mangoes were there at first?
| |
Mangoes |
Persimmons |
Total |
| Before |
6 u |
2 p |
102 |
| Change |
- 1 u |
- 1 p |
- 19 |
| After |
5 u |
1 p |
83 |
Total number of mangoes and persimmons sold
= 102 - 83
= 19
5 u + 1 p = 83
1 p = 83 - 5 u --- (1)
1 u + 1 p = 19
1 p = 19 - 1 u --- (2)
(2) = (1)
19 - 1 u = 83 - 5 u
5 u - 1 u = 83 - 19
4 u = 64
1 u = 64 ÷ 4 = 16
Number of mangoes at first
= 6 u
= 6 x 16
= 96
Answer(s): 96
