Copier T prints at a rate of 114 leaflets in every 2 minutes and Copier U prints at a rate of 138 leaflets in every 6 minutes. At 3 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 5 p.m., the total number of leaflets printed during the past two hours was 7741. 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 = 114 ÷ 2 = 57
Number of leaflets Copier U prints per min = 138 ÷ 6 = 23

From 3 p.m. to 5 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of leaflets printed by Copier U in 3 h
= 120 x 23
= 2760

Number of leaflets printed by Copier T in 3 h
= 7741 - 2760
= 4981

Percentage of the number of leaflets that Copier T printed over the total number of leaflets printed
= ⁴⁹⁸¹₇₇₄₁ x 100%
≈ 64.35%

Answer(s): 64.35%