Respuesta :
Answer: The cost of one apple is  $0.5 or 50 cent.
Step-by-step explanation:
-5(6x + 6y)= 7.50(-5)
3(10x + 5y)=8.75(3)
-30x -30y = -37.5
30x  + 15y= 26.25
    -15y= -11.25
 y= 0.75
30x + 15(0.75)= 26.25
30x + 15(0.75)= 26.25
30x + 11.25= 26.25 Â
    -11.25   -11.25
30x= 15
x= 0.5 Â
The cost of one apple given the system of equation is $0.5
Given:
6x + 6y = 7.50
10x + 5y = 8.75
multiply (1) by 5 and (2) by 6
30x + 30y = 37.5 (3)
60x + 30y = 52.5 (4)
subtract (3) from (4)
60x - 30x = 52.5 - 37.5
30x = 15
x = 15/30
x = $0.5
Substitute x = $0.5 into (1)
6x + 6y = 7.50
6(0.5) + 6y = 7.50
3 + 6y = 7.50
6y = 7.50 - 3
6y = 4.50
y = 4.50 / 6
y = $0.75
Therefore, the cost of apple and orange is $0.5 and $0.75 respectively
Learn more about simultaneous equation:
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