Question

a school ordered 3 large boxes of board markers. After giving 15 markets to each of 3 teachers, there were 90 markers left. How many markers were originally in each box?

Answer 1

There were 45 markers originally in each box.

Step-by-step explanation:

Given,

Boxes ordered = 3 large boxes

Markers given to one teacher = 15

Markers given to 3 teachers = 15*3 = 45 markers

Remaining markers = 90

Let,

x be the original number of markers in 3 boxes.

Total markers - markers given to teachers = markers left

$x-45=90\\x=90+45\\x=135$

There were 135 markers in 3 boxes.

3 boxes = 135 markers

1 box = $\frac{135}{3}=45\ markers$

There were 45 markers originally in each box.

Keywords: multiplication, addition

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