Copier Z prints at a rate of 96 leaflets in every 4 minutes and Copier A prints at a rate of 150 leaflets in every 5 minutes. At 2 p.m., both copiers started printing. After a while, Copier Z stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier A continued printing during this time. At 4 p.m., the total number of leaflets printed during the past two hours was 6108. Express the number of leaflets printed by Copier Z as a percentage of the total number of leaflets printed by both copiers. Round off your answer to 2 decimal places.
Number of leaflets Copier Z prints per min = 96 ÷ 4 = 24
Number of leaflets Copier A prints per min = 150 ÷ 5 = 30

From 2 p.m. to 4 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of leaflets printed by Copier A in 2 h
= 120 x 30
= 3600

Number of leaflets printed by Copier Z in 2 h
= 6108 - 3600
= 2508

Percentage of the number of leaflets that Copier Z printed over the total number of leaflets printed
= ²⁵⁰⁸₆₁₀₈ x 100%
≈ 41.06%

Answer(s): 41.06%