Copier G prints at a rate of 116 brochures in every 2 minutes and Copier H prints at a rate of 140 brochures in every 4 minutes. At 7 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 9 p.m., the total number of brochures printed during the past two hours was 7356. 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 = 116 ÷ 2 = 58
Number of brochures Copier H prints per min = 140 ÷ 4 = 35

From 7 p.m. to 9 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of brochures printed by Copier H in 7 h
= 120 x 35
= 4200

Number of brochures printed by Copier G in 7 h
= 7356 - 4200
= 3156

Percentage of the number of brochures that Copier G printed over the total number of brochures printed
= ³¹⁵⁶₇₃₅₆ x 100%
≈ 42.90%

Answer(s): 42.90%