Kevin sold 10 pounds of apples and 20 pounds of raspberries.
Step-by-step explanation:
Given,
Cost per pound of apples = $3.50
Cost per pound of raspberries = $4
Total amount earned = $115
Let,
x represent the pounds of apples sold
y represent the pounds of raspberries sold
According to given statement;
3.50x+4y=115 Eqn 1
y = 2x Eqn 2
Putting value of y from Eqn 2 in Eqn 1
[tex]3.50x+4(2x)=115\\3.50x+8x=115\\11.50x=115[/tex]
Dividing both sides by 11.50
[tex]\frac{11.50x}{11.50}=\frac{115}{11.50}\\x=10[/tex]
Putting x=10 in Eqn 2
[tex]y=2(10)\\y=20[/tex]
Kevin sold 10 pounds of apples and 20 pounds of raspberries.
Keywords: linear equation, substitution method
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