Copier T prints at a rate of 90 leaflets in every 2 minutes and Copier U prints at a rate of 128 leaflets in every 4 minutes. At 7 p.m., both copiers started printing. After a while, Copier T stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier U continued printing during this time. At 9 p.m., the total number of leaflets printed during the past two hours was 7552. Express the number of leaflets printed by Copier T 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 T prints per min = 90 ÷ 2 = 45
Number of leaflets Copier U prints per min = 128 ÷ 4 = 32

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

Number of leaflets printed by Copier U in 7 h
= 120 x 32
= 3840

Number of leaflets printed by Copier T in 7 h
= 7552 - 3840
= 3712

Percentage of the number of leaflets that Copier T printed over the total number of leaflets printed
= ³⁷¹²₇₅₅₂ x 100%
≈ 49.15%

Answer(s): 49.15%