The cost of one French silk cheesecake is $5 and one apple cheesecake is $14.
Step-by-step explanation:
Let,
Cost of one French silk cheesecake = x
Cost of one apple cheesecake = y
According to given statement;
8x+y=54 Eqn 1
3x+y=29 Eqn 2
Subtracting Eqn 2 from Eqn 1
[tex](8x+y)-(3x+y)=54-29\\8x+y-3x-y=25\\5x=25[/tex]
Dividing both sides by 5
[tex]\frac{5x}{5}=\frac{25}{5}\\x=5[/tex]
Putting x=5 in Eqn 1
[tex]8(5)+y=54\\40+y=54\\y=54-40\\y=14[/tex]
The cost of one French silk cheesecake is $5 and one apple cheesecake is $14.
Keywords: linear equation, subtraction
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