Copier X prints at a rate of 114 leaflets in every 2 minutes and Copier Y prints at a rate of 138 leaflets in every 3 minutes. At 6 p.m., both copiers started printing. After a while, Copier X stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier Y continued printing during this time. At 8 p.m., the total number of leaflets printed during the past two hours was 8477. Express the number of leaflets printed by Copier X 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 X prints per min = 114 ÷ 2 = 57
Number of leaflets Copier Y prints per min = 138 ÷ 3 = 46

From 6 p.m. to 8 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of leaflets printed by Copier Y in 6 h
= 120 x 46
= 5520

Number of leaflets printed by Copier X in 6 h
= 8477 - 5520
= 2957

Percentage of the number of leaflets that Copier X printed over the total number of leaflets printed
= ²⁹⁵⁷₈₄₇₇ x 100%
≈ 34.88%

Answer(s): 34.88%