Copier G prints at a rate of 80 brochures in every 2 minutes and Copier H prints at a rate of 150 brochures in every 5 minutes. At 2 p.m., both copiers started printing. After a while, Copier G stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier H continued printing during this time. At 5 p.m., the total number of brochures printed during the past three hours was 8680. Express the number of brochures printed by Copier G 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 G prints per min = 80 ÷ 2 = 40
Number of brochures Copier H 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 H in 2 h
= 180 x 30
= 5400

Number of brochures printed by Copier G in 2 h
= 8680 - 5400
= 3280

Percentage of the number of brochures that Copier G printed over the total number of brochures printed
= ³²⁸⁰₈₆₈₀ x 100%
≈ 37.79%

Answer(s): 37.79%