Copier K prints at a rate of 116 letters in every 2 minutes and Copier L prints at a rate of 140 letters in every 5 minutes. At 5 p.m., both copiers started printing. After a while, Copier K stopped printing for some time as the ink cartridges were being changed before it continued to print again. Copier L continued printing during this time. At 7 p.m., the total number of letters printed during the past two hours was 6026. Express the number of letters printed by Copier K as a percentage of the total number of letters printed by both copiers. Round off your answer to 2 decimal places.
Number of letters Copier K prints per min = 116 ÷ 2 = 58
Number of letters Copier L prints per min = 140 ÷ 5 = 28

From 5 p.m. to 7 p.m. = 2 h
1 h = 60 min
2 h = 120 min

Number of letters printed by Copier L in 5 h
= 120 x 28
= 3360

Number of letters printed by Copier K in 5 h
= 6026 - 3360
= 2666

Percentage of the number of letters that Copier K printed over the total number of letters printed
= ²⁶⁶⁶₆₀₂₆ x 100%
≈ 44.24%

Answer(s): 44.24%