Copier U prints at a rate of 116 leaflets in every 2 minutes and Copier V prints at a rate of 120 leaflets in every 6 minutes. At 1 p.m., both copiers started printing. After a while, Copier U stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier V continued printing during this time. At 5 p.m., the total number of leaflets printed during the past four hours was 7668. Express the number of leaflets printed by Copier U 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 U prints per min = 116 ÷ 2 = 58
Number of leaflets Copier V prints per min = 120 ÷ 6 = 20

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

Number of leaflets printed by Copier V in 1 h
= 240 x 20
= 4800

Number of leaflets printed by Copier U in 1 h
= 7668 - 4800
= 2868

Percentage of the number of leaflets that Copier U printed over the total number of leaflets printed
= ²⁸⁶⁸₇₆₆₈ x 100%
≈ 37.40%

Answer(s): 37.40%