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Marcus spent 10 hours doing his homework last week. This week he spent 11 hours doing homework. He says that he spent 110% more time doing homework this week. Is he correct? Show your work to justify your
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Marcus spent 10 hours doing his homework last week. This week he spent 11 hours doing homework. He says that he spent 110% more time doing homework this week. Is he correct? Show your work to justify your decision

User Rony
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2 Answers

3 votes
The answer is incorrect because 11-10=1. and 1÷10 is 10. 10(100) Is 10%. Marcus just added a zero to eleven and turned it into a percent . This is why Marcus is incorrect
User Jeremy Holt
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8.1k points
6 votes
He is indeed incorrect, because change is described as [change] / [original amount]. Therefore, he actually only studied 10% more than the previous week
User Hfactor
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8.7k points
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