Copier B prints at a rate of 100 flyers in every 2 minutes and Copier C prints at a rate of 156 flyers in every 6 minutes. At 6 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 10 p.m., the total number of flyers printed during the past four hours was 8910. Express the number of flyers printed by Copier B as a percentage of the total number of flyers printed by both copiers. Round off your answer to 2 decimal places.
Number of flyers Copier B prints per min = 100 ÷ 2 = 50
Number of flyers Copier C prints per min = 156 ÷ 6 = 26

From 6 p.m. to 10 p.m. = 4 h
1 h = 60 min
4 h = 240 min

Number of flyers printed by Copier C in 6 h
= 240 x 26
= 6240

Number of flyers printed by Copier B in 6 h
= 8910 - 6240
= 2670

Percentage of the number of flyers that Copier B printed over the total number of flyers printed
= ²⁶⁷⁰₈₉₁₀ x 100%
≈ 29.97%

Answer(s): 29.97%