There were 54 apples and pomegranates in a stall at first. After
17 of the apples and
12 of the pomegranates were sold, there were a total of 42 apples and pomegranates now. How many apples were there at first?
| |
Apples |
Pomegranates |
Total |
| Before |
7 u |
2 p |
54 |
| Change |
- 1 u |
- 1 p |
- 12 |
| After |
6 u |
1 p |
42 |
Total number of apples and pomegranates sold
= 54 - 42
= 12
6 u + 1 p = 42
1 p = 42 - 6 u --- (1)
1 u + 1 p = 12
1 p = 12 - 1 u --- (2)
(2) = (1)
12 - 1 u = 42 - 6 u
6 u - 1 u = 42 - 12
5 u = 30
1 u = 30 ÷ 5 = 6
Number of apples at first
= 7 u
= 7 x 6
= 42
Answer(s): 42
