Copier B prints at a rate of 116 brochures in every 2 minutes and Copier C prints at a rate of 150 brochures in every 5 minutes. At 2 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 5 p.m., the total number of brochures printed during the past three hours was 8323. 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 = 116 ÷ 2 = 58
Number of brochures Copier C prints per min = 150 ÷ 5 = 30

From 2 p.m. to 5 p.m. = 3 h
1 h = 60 min
3 h = 180 min

Number of brochures printed by Copier C in 2 h
= 180 x 30
= 5400

Number of brochures printed by Copier B in 2 h
= 8323 - 5400
= 2923

Percentage of the number of brochures that Copier B printed over the total number of brochures printed
= ²⁹²³₈₃₂₃ x 100%
≈ 35.12%

Answer(s): 35.12%