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20 May, 19:24

You bought 3 whiteboard markers and one eraser for each of the ten students in class. A eraser costs $2.75 and the total cost was $177.50. Write and solve an equation that you could use to find the cost of each whiteboard marker

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  1. 20 May, 21:36
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    Let M represent the cost of a whiteboard marker.

    10 (3M + $2.75) = $177.50

    3M + $2.75 = $17.75

    3M = $15

    M = $5

    Hence, each whiteboard marker cost $5.
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