Copier B prints at a rate of 90 brochures in every 2 minutes and Copier C prints at a rate of 130 brochures in every 5 minutes. At 3 p.m., both copiers started printing. After a while, Copier B stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier C continued printing during this time. At 6 p.m., the total number of brochures printed during the past three hours was 8909. Express the number of brochures printed by Copier B 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 B prints per min = 90 ÷ 2 = 45
Number of brochures Copier C prints per min = 130 ÷ 5 = 26

From 3 p.m. to 6 p.m. = 3 h
1 h = 60 min
3 h = 180 min

Number of brochures printed by Copier C in 3 h
= 180 x 26
= 4680

Number of brochures printed by Copier B in 3 h
= 8909 - 4680
= 4229

Percentage of the number of brochures that Copier B printed over the total number of brochures printed
= ⁴²²⁹₈₉₀₉ x 100%
≈ 47.47%

Answer(s): 47.47%