Copier N prints at a rate of 102 brochures in every 3 minutes and Copier P prints at a rate of 125 brochures in every 5 minutes. At 1 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 3 p.m., the total number of brochures printed during the past two hours was 7948. 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 = 102 ÷ 3 = 34
Number of brochures Copier P prints per min = 125 ÷ 5 = 25

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

Number of brochures printed by Copier P in 1 h
= 120 x 25
= 3000

Number of brochures printed by Copier N in 1 h
= 7948 - 3000
= 4948

Percentage of the number of brochures that Copier N printed over the total number of brochures printed
= ⁴⁹⁴⁸₇₉₄₈ x 100%
≈ 62.25%

Answer(s): 62.25%