How do you find the total price?

Question

Dr. Johnson is buying more toothbrushes to hand out to his patients at his dental practice. They are sold only in boxes containing one dozen toothbrushes. The pricing of the boxes is shown in the table below.

Number of Boxes n Total Price t
2 $29.50
4 $59.00

Dr. Johnson has calculated that he will need 567 toothbrushes. How much will Dr. Johnson spend on the appropriate number of boxes?

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Answer 1 · 2018-07-11T22:43:10

#$708# for #48# boxes = #576# toothbrushes

He'll have #9# extra toothbrushes

Given: #12 * 2 = 24# toothbrushes #= $29.50#. Dr. Johnson needs 567 toothbrushes.

Start by dividing #567# by #24# to find out how many sets of #2# boxes he will need to purchase:

#567/24 = 23.625#

Since we can't buy a partial set of boxes, Dr. Johnson will need to buy #24*2 = 48# boxes:

Find the cost of #24# sets of #2# boxes:

#$29.50 * 24 = $708#

#$708# for #48# boxes = #576# toothbrushes

He'll have #9# extra toothbrushes