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31-10-2022
Mathematics

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A planner at Barnes and Noble originally cost $10. During the weekend, the planner went on sale for $9. What is the price markdown (percent of change)?

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KalidO607266 KalidO607266

31-10-2022

[tex]\text{percentage change =}\frac{new\text{ cost -original cost}}{\text{original cost}}\times100^{\frac{0}{\square_0}}[/tex]

new cost = $9

original cost = $10

Substitute the value into the formula;

[tex]\text{percentage change =}\frac{10-9}{10}\times100^{}[/tex]

= 1/10 x 100%

= 10%

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