Ms. Smith bought 30 boxes of pencils at the beginning of the year. Each box costs $2.15 including tax. 6/15 of the boxes she bought have been used. How much money did she spend on the remaining boxes?

She spent $38.7 on the remaining boxes.

Step-by-step explanation:

total number of boxes of pencil bought by Ms. Smith, = 30 boxes

cost of each box = $2.15

fraction of boxes of pencil used = 6 / 15

number of boxes of pencil used =

number of boxes of pencil remaining = 30 boxes - 12 boxes = 18 boxes

Cost of the 18 boxes remaining = 18 x $2.15

                                                    = $38.7

Therefore, she spent $38.7 on the remaining boxes.

step-by-step explanation: