There were 259 oranges and pears in a fruit stall.
49 of the oranges and
35 of pears were sold. Given that there were 168 oranges and pears left, how many oranges were there in the fruit stall at first?
|
Oranges |
Pears |
Before |
9 u |
5 p |
Change |
- 4 u |
- 3 p |
After |
5 u |
2 p |
9 u + 5 p = 259 --- (1)
5 u + 2 p = 168 --- (2)
Make p the same.
(1)
x 2 18 u + 10 p = 518 --- (3)
(2)
x 5 25 u + 10 p = 840 --- (4)
(4) - (3)
25 u - 18 u = 840 - 518
7 u = 322
1 u = 322 ÷ 7 = 46
Number of oranges at first
= 9 u
= 9 x 46
= 414
Answer(s): 414