Question

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

Answer 1

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.