Each pen costs 3 times as much as each eraser. If the total cost of two pens and four erasers is 6.30, find the cost of each pen.

Question

Mathematics

Zoie Bryan

11 December, 23:52

Each pen costs 3 times as much as each eraser. If the total cost of two pens and four erasers is 6.30, find the cost of each pen.

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Answers (1)

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Triston Dudley · Answer 1

X is the cost of the eraser.

2 (3x) + 4x = 6.30

10x = 6.30 ~ Divide each side by 10.

x = 0.63

Then multiply 0.63 by 3 to get the cost of the pen which is

0.63 x 3 = $1.89

The cost of each pen is $1.89

The cost of each eraser is 0.63 cents.