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A pencil costs $0.25 more than an eraser. if the cost of 8 pencils is $6.80, what is the cost of one...
5 months ago
Q:
a pencil costs $0.25 more than an eraser. if the cost of 8 pencils is $6.80, what is the cost of one eraser? how do i do this problem?
Accepted Solution
A:
Hi there! The price of one eraser is $0.60
Let the price of an eraser be represented by x.
The price of a pencil is x + 0.25
Now we can set up (and solve) an equation.
8 (x + 0.25) = 6.80
Work out the parenthesis
8x + 2 = 6.80
Subtract 2.
8x = 4.80
Divide by 8
x = 4.80 / 8 = 0.60
Therefore, the price of one eraser is $0.60