There were 277 oranges and pomegranates in a fruit stall.
37 of the oranges and
35 of pomegranates were sold. Given that there were 136 oranges and pomegranates left, how many oranges were there in the fruit stall at first?
|
Oranges |
Pomegranates |
Before |
7 u |
5 p |
Change |
- 3 u |
- 3 p |
After |
4 u |
2 p |
7 u + 5 p = 277 --- (1)
4 u + 2 p = 136 --- (2)
Make p the same.
(1)
x 2 14 u + 10 p = 554 --- (3)
(2)
x 5 20 u + 10 p = 680 --- (4)
(4) - (3)
20 u - 14 u = 680 - 554
6 u = 126
1 u = 126 ÷ 6 = 21
Number of oranges at first
= 7 u
= 7 x 21
= 147
Answer(s): 147