There were 242 starfruits and kiwis in a fruit stall.
37 of the starfruits and
35 of kiwis were sold. Given that there were 134 starfruits and kiwis left, how many starfruits were there in the fruit stall at first?
|
Starfruits |
Kiwis |
Before |
7 u |
5 p |
Change |
- 3 u |
- 3 p |
After |
4 u |
2 p |
7 u + 5 p = 242 --- (1)
4 u + 2 p = 134 --- (2)
Make p the same.
(1)
x 2 14 u + 10 p = 484 --- (3)
(2)
x 5 20 u + 10 p = 670 --- (4)
(4) - (3)
20 u - 14 u = 670 - 484
6 u = 186
1 u = 186 ÷ 6 = 31
Number of starfruits at first
= 7 u
= 7 x 31
= 217
Answer(s): 217