Respuesta :
1 pencil + 1 eraser = $1.10
Pencil cost $1 more than the eraser.
⇒ If we take away $1 from the total, both the pencil and the eraser will cost the same.
⇒ $1.10 - $1.00 = $0.10
Divide by 2 to find the cost of the eraser.
⇒$0.10 ÷ 2 = $0.05
Find the cost of the pencil, which is $1 more than the eraser.
⇒ $0.05 + $1 = $1.05
Answer: The eraser costs $0.05
The eraser costs $0.05
Let the cost of the eraser be x.
Then, the cost of the pencil will be 1+x.
The equation to solve the question will then be:
(1+x) + x = 1.10
1 + x + x = 1.10
1 + 2x = 1.10
2x = 1.10 - 1
2x = 0.10
Divide both side by 2
2x/2 = 0.10/2
x = 0.05
Therefore, the eraser costs $0.05
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