There were 68 oranges and kiwis in a stall at first. After
14 of the oranges and
12 of the kiwis were sold, there were a total of 49 oranges and kiwis now. How many oranges were there at first?
| |
Oranges |
Kiwis |
Total |
| Before |
4 u |
2 p |
68 |
| Change |
- 1 u |
- 1 p |
- 19 |
| After |
3 u |
1 p |
49 |
Total number of oranges and kiwis sold
= 68 - 49
= 19
3 u + 1 p = 49
1 p = 49 - 3 u --- (1)
1 u + 1 p = 19
1 p = 19 - 1 u --- (2)
(2) = (1)
19 - 1 u = 49 - 3 u
3 u - 1 u = 49 - 19
2 u = 30
1 u = 30 ÷ 2 = 15
Number of oranges at first
= 4 u
= 4 x 15
= 60
Answer(s): 60
