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a pair of hiking boots originally cost $100.the price was increased by 10%, then decreased 10%. what was the price after these changes?

Sagot :

[tex]p\%=\frac{p}{100}\\\\10\%=\frac{10}{100}=0.1\\\\10\%\ of\ \$100=0.1\cdot\$100=\$10\\\\The\ price\ after\ increase:\$100+\$10=\$110\\\\10\%\ of\ \$110=0.1\cdot\$110=\$11\\\\The\ price\ after\ decrease:\$110-\$11=\$99\\\\Answer:\\\underline{The\ price\ after\ these\ changes\ is\ equal\ \$99}[/tex]
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