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. 

1. Elyse wanted to place an order to print 260 A3-size copies of her poster. How much did she need to pay?
2. Paul placed an order to print some A4-size copies of his poster. Henry 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 $203.50. How many A4-size copies of the poster did Paul print?

(a)
Amount that Elyse needed to pay
= 60 + 260 x 0.50
= $190

(b)
Total cost = $203.50

Printing cost excluding the basic printing charges
= 203.50 - 50 - 60
= $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 Paul printed = 85

Answer(s): (a) $190; (b) 85