Copier Q prints at a rate of 104 leaflets in every 4 minutes and Copier R prints at a rate of 132 leaflets in every 6 minutes. At 5 p.m., both copiers started printing. After a while, Copier Q stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier R continued printing during this time. At 9 p.m., the total number of leaflets printed during the past four hours was 8151. Express the number of leaflets printed by Copier Q 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 Q prints per min = 104 ÷ 4 = 26
Number of leaflets Copier R prints per min = 132 ÷ 6 = 22

From 5 p.m. to 9 p.m. = 4 h
1 h = 60 min
4 h = 240 min

Number of leaflets printed by Copier R in 5 h
= 240 x 22
= 5280

Number of leaflets printed by Copier Q in 5 h
= 8151 - 5280
= 2871

Percentage of the number of leaflets that Copier Q printed over the total number of leaflets printed
= ²⁸⁷¹₈₁₅₁ x 100%
≈ 35.22%

Answer(s): 35.22%