A school office has two printers. Printer A prints 24 pages per minute and starts immediately. Printer B prints 30 pages per minute but needs a 4-minute warm-up before it begins printing. To print 600 pages on a single printer, which printer finishes the job in less time, and by how many minutes?
Show Worked Solution
Worked Solution
Step 1: Compute the time for Printer A.
A prints 24 pages per minute with no warm-up.
Time for A = 600 ÷ 24 = 25 minutes.
Step 2: Compute the time for Printer B.
B needs a 4-minute warm-up, then prints at 30 pages per minute.
Printing time for B = 600 ÷ 30 = 20 minutes.
Total time for B = 4 + 20 = 24 minutes.
Step 3: Compare the two total times.
A = 25 min, B = 24 min. B finishes first.
Step 4: Difference = 25 − 24 = 1 minute. Printer B is faster by 1 minute.
Answer: Printer B, by 1 minute
Correct answer: Printer B, by 1 minute
Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.
Start Free Trial — 7 Days Free