An old printer prints 5 pages per minute. A new one is 60% faster. Together, how long to print 300 pages?
Correct answer: B. 23 min
- A. 15 min
- B. 23 min
- C. 18 min
- D. 20 min
Explanation
To determine the time taken by both printers together, first calculate the speed of the new printer. The old printer prints 5 pages per minute. With a 60% increase, the new printer prints at 8 pages per minute (5 + 0.6 * 5). Together, they print 13 pages per minute (5 + 8). To print 300 pages, they need 300 pages / 13 pages per minute ≈ 23.08 minutes. Rounding it yields 23 minutes, making this the correct answer. The other options assume incorrect combined speeds or miscalculate the time required.
Last updated
About Logical Problems
Logical problems present several conditions about people, objects, events or choices and require their possible arrangements to be tested. They cover constraint-based reasoning, rankings, matching, grouping, scheduling and elimination, with attention to the difference between a complete solution and a possibility that merely satisfies one condition.
Practise Logical Problems
439 free Logical Problems MCQs from Analytical and Logical Reasoning, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Analytical and Logical Reasoning questions like this
Analytical and Logical Reasoning is on 24 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
24 - Correct. C does double the work → C = 2 units/day, A = 1 → If C finishes in 12, total = 24 units → A = 1/day → 24 days.
5 men can do a job in 20 days. How many men are needed to complete the job in 10 days?
8 workers complete a job in 6 days. How many are needed to complete it in 4 days?
A 3D designer renders an animation in 20 hours. If using a GPU that boosts speed by 40%, new render time is:
A alone can do a job in 12 days, B in 18 days. How long will they take together?