Question

Matt makes $80 a month mowing lawns. His friend James also mows lawns, but he makes x dollars less per month than Matt does. James makes $816 per year. How much less each month does James make than Matt?

Answer 1

• 12
• $68

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Answer 2

$12

Explanation:

Matt makes $80 a month mowing lawns while James also mows lawns and makes x dollars less per month.

That is, the amount that James makes a month is:

80 - x

James makes $816 per year.

Since there are 12 months in a year, this implies that:

(80 - x) * 12 = 816

=> 960 - 12x = 816

960 - 816 = 12x

144 = 12x

=> x = 144 / 12 = $12

James makes $12 less than Matt every month