Copier M prints at a rate of 80 flyers in every 2 minutes and Copier N prints at a rate of 128 flyers in every 4 minutes. At 1 p.m., both copiers started printing. After a while, Copier M stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier N continued printing during this time. At 3 p.m., the total number of flyers printed during the past two hours was 6447. Express the number of flyers printed by Copier M 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 M prints per min = 80 ÷ 2 = 40
Number of flyers Copier N prints per min = 128 ÷ 4 = 32

From 1 p.m. to 3 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of flyers printed by Copier N in 1 h
= 120 x 32
= 3840

Number of flyers printed by Copier M in 1 h
= 6447 - 3840
= 2607

Percentage of the number of flyers that Copier M printed over the total number of flyers printed
= ²⁶⁰⁷₆₄₄₇ x 100%
≈ 40.44%

Answer(s): 40.44%