There were 255 kiwis and mangoes in a fruit stall.
310 of the kiwis and
35 of mangoes were sold. Given that there were 141 kiwis and mangoes left, how many kiwis were there in the fruit stall at first?
|
Kiwis |
Mangoes |
Before |
10 u |
5 p |
Change |
- 3 u |
- 3 p |
After |
7 u |
2 p |
10 u + 5 p = 255 --- (1)
7 u + 2 p = 141 --- (2)
Make p the same.
(1)
x 2 20 u + 10 p = 510 --- (3)
(2)
x 5 35 u + 10 p = 705 --- (4)
(4) - (3)
35 u - 20 u = 705 - 510
15 u = 195
1 u = 195 ÷ 15 = 13
Number of kiwis at first
= 10 u
= 10 x 13
= 130
Answer(s): 130