ExplanationIt’s useful to use plugging values in this problem.

Note that increasing something by 10 percent is the same as multiplying by 1.10, and decreasing something by 5 percent is the same as multiplying

by 0.95.

Definitely use your on-screen calculator on a problem such as this. Because you are dealing with a range, it will save you time to work from the top down until you reach a correct answer, then work your way from the bottom up until you reach a correct answer. Each answer in between the smallest correct answer and the largest correct answer must also be correct.

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Hence option B,C and D are correct!
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Sandy

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