There were 325 pears and apples in a fruit stall.
310 of the pears and
35 of apples were sold. Given that there were 142 pears and apples left, how many pears were there in the fruit stall at first?
| |
Pears |
Apples |
| Before |
10 u |
5 p |
| Change |
- 3 u |
- 3 p |
| After |
7 u |
2 p |
10 u + 5 p = 325 --- (1)
7 u + 2 p = 142 --- (2)
Make p the same.
(1)
x 2 20 u + 10 p = 650 --- (3)
(2)
x 5 35 u + 10 p = 710 --- (4)
(4) - (3)
35 u - 20 u = 710 - 650
15 u = 60
1 u = 60 ÷ 15 = 4
Number of pears at first
= 10 u
= 10 x 4
= 40
Answer(s): 40
