The table shows the charges for printing at a printing company. The cost per piece is based on the total number of copies to be printed.
- Wendy wanted to place an order to print 350 A3-size copies of her poster. How much did she need to pay?
- Asher placed an order to print some A4-size copies of his poster. Seth placed an order to print some A3-size copies of his poster. Both of them ordered an equal number of copies of their posters. The total cost of their orders was $143.50. How many A4-size copies of the poster did Asher print?
(a)
Amount that Wendy needed to pay
= 30 + 350 x 0.50
= $205
(b)
Total cost = $143.50
Printing cost excluding the basic printing charges
= 143.50 - 20 - 30
= $93.50
Amount of 1 A4 copy and 1 A3 copy if the cost per piece was between 1 to 49
= 0.60 + 1.00
= $1.60
Number of sets if the number of copies that each boy printed was between 1 to 49
= 93.50 ÷ 1.6
≈ 58.4 (x) (Number of sets must be a whole number and is between 1 to 49.)
Amount of 1 A4 copy and 1 A3 copy if the cost per piece was between 50 to 99
= 0.35 + 0.75
= $1.10
Number of sets if the number of copies that each boy printed was between 50 to 99
= 93.50 ÷ 1.1
= 85 (✓) (Number of sets must be a whole number and is between 50 to 99.)
Number of A4-size copies of the poster that Asher printed = 85
Answer(s): (a) $205; (b) 85