Copier A prints at a rate of 118 leaflets in every 2 minutes and Copier B prints at a rate of 144 leaflets in every 6 minutes. At 8 p.m., both copiers started printing. After a while, Copier A stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier B continued printing during this time. At 10 p.m., the total number of leaflets printed during the past two hours was 8138. Express the number of leaflets printed by Copier A as a percentage of the total number of leaflets printed by both copiers. Round off your answer to 2 decimal places.
Number of leaflets Copier A prints per min = 118 ÷ 2 = 59
Number of leaflets Copier B prints per min = 144 ÷ 6 = 24

From 8 p.m. to 10 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of leaflets printed by Copier B in 8 h
= 120 x 24
= 2880

Number of leaflets printed by Copier A in 8 h
= 8138 - 2880
= 5258

Percentage of the number of leaflets that Copier A printed over the total number of leaflets printed
= ⁵²⁵⁸₈₁₃₈ x 100%
≈ 64.61%

Answer(s): 64.61%