This week’s GMAT challenge from PrepForTests.com is a problem solving question.
Labeling machine A working alone takes 1 minute to put labels on 100 cans and labeling machines A and B working together take 45 seconds to put labels on 100 cans. How long would it take machine B working alone to put labels on 100 cans?
- 25 seconds
- 1 minute 45 seconds
- 2 minutes
- 2 minutes 30 seconds
- 3 minutes
Have a go at answering this and then review your answer.
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