Copier N prints at a rate of 85 flyers in every 5 minutes and Copier P prints at a rate of 126 flyers in every 6 minutes. At 4 p.m., both copiers started printing. After a while, Copier N stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier P continued printing during this time. At 7 p.m., the total number of flyers printed during the past three hours was 6539. Express the number of flyers printed by Copier N as a percentage of the total number of flyers printed by both copiers. Round off your answer to 2 decimal places.
Number of flyers Copier N prints per min = 85 ÷ 5 = 17
Number of flyers Copier P prints per min = 126 ÷ 6 = 21

From 4 p.m. to 7 p.m. = 3 h
1 h = 60 min
3 h = 180 min

Number of flyers printed by Copier P in 4 h
= 180 x 21
= 3780

Number of flyers printed by Copier N in 4 h
= 6539 - 3780
= 2759

Percentage of the number of flyers that Copier N printed over the total number of flyers printed
= ²⁷⁵⁹₆₅₃₉ x 100%
≈ 42.19%

Answer(s): 42.19%