Copier V prints at a rate of 106 brochures in every 2 minutes and Copier W prints at a rate of 144 brochures in every 6 minutes. At 6 p.m., both copiers started printing. After a while, Copier V stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier W continued printing during this time. At 9 p.m., the total number of brochures printed during the past three hours was 7089. Express the number of brochures printed by Copier V 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 V prints per min = 106 ÷ 2 = 53
Number of brochures Copier W prints per min = 144 ÷ 6 = 24

From 6 p.m. to 9 p.m. = 3 h
1 h = 60 min
3 h = 180 min

Number of brochures printed by Copier W in 6 h
= 180 x 24
= 4320

Number of brochures printed by Copier V in 6 h
= 7089 - 4320
= 2769

Percentage of the number of brochures that Copier V printed over the total number of brochures printed
= ²⁷⁶⁹₇₀₈₉ x 100%
≈ 39.06%

Answer(s): 39.06%