Copier N prints at a rate of 80 brochures in every 2 minutes and Copier P prints at a rate of 138 brochures in every 6 minutes. At 5 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 brochures printed during the past two hours was 5363. Express the number of brochures printed by Copier N as a percentage of the total number of brochures printed by both copiers. Round off your answer to 2 decimal places.
Number of brochures Copier N prints per min = 80 ÷ 2 = 40
Number of brochures Copier P prints per min = 138 ÷ 6 = 23

From 5 p.m. to 7 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of brochures printed by Copier P in 5 h
= 120 x 23
= 2760

Number of brochures printed by Copier N in 5 h
= 5363 - 2760
= 2603

Percentage of the number of brochures that Copier N printed over the total number of brochures printed
= ²⁶⁰³₅₃₆₃ x 100%
≈ 48.54%

Answer(s): 48.54%