Two draftpersons operating the same computer plotter work $9$ hours each, on a day and night shift basis. One produces $80$ drawings per hour; the other produces $110$ drawings per hour. What is the difference in their outputs after $25$ days?
A) 6,750
B) 18,000
C) 750
D) 42,750
E) 528

Question

Quizplus · Accepted Answer

The first draftsperson produces $80 \times 9 \times 25 = 18,000$ drawings in 25 days. The second produces $110 \times 9 \times 25 = 24,750$ drawings. The difference is $24,750 - 18,000 = 6,750$.

Two Draftpersons Operating the Same Computer Plotter Work 999 Hours Each, on a Day and Night Shift Basis

Two Draftpersons Operating the Same Computer Plotter Work $9$ Hours Each, on a Day and Night Shift Basis