Carrie works 40 hours. She spends 15% of her time at the register, 30% of her time greeting customers, and the remainder of the time on maintenance. What percentage of carries time is spent on maintenance?

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Twibo13 Twibo13

27-07-2015
Mathematics

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Carrie works 40 hours. She spends 15% of her time at the register, 30% of her time greeting customers, and the remainder of the time on maintenance. What percentage of carries time is spent on maintenance?

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JaySL JaySL · Answer 1 · 2015-07-27T18:44:13-04:00

Call x the percentage of Carrie's time that is spent on maintenance. We can write the following equation to solve for x: x+15+30=100, and subtracting 45 from both sides, we get x=55. Therefore, 55% of Carrie's time is spent on maintenance.

Notice that how much time Carrie spends at work is extraneous information. Remember, just because a problem gives you certain information doesn't mean you need to use the information to solve the problem!