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2 years ago

8

Jack wanted a leather jacket that was priced at $253. When he went to the store to make the purchase, it was reduced in price to

$220. What was the percent of decrease in the price of the jacket?
(round to the nearest whole percent)

1 answer:

FinnZ [79.3K]2 years ago

7 0

I will try to find a link for the answer brb

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Answer:

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Step-by-step explanation:

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3 years ago

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Studentka2010 [4]

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2 years ago

In a lab, a substance was cooked by 42 C over a period of 7 hours at a constant rate. What was the change in temperature each ho

Mekhanik [1.2K]

Given that we have the change in temperature over 7 hours and we are looking for the change over 1 hour, we can divide the total change in temperature by 7. Thus, the change in temperature would be $\frac{42}{7} C^{\circ}$ .

Additionally, this can be solved by equations:

$\dfrac{42 \,\textrm{C}^{\circ}}{7 \,\textrm{hours}} = \dfrac{x \,\textrm{C}^{\circ}}{1 \,\textrm{hour}}$

$1 \,\textrm{hour} \cdot \dfrac{42 \,\textrm{C}^{\circ}}{7 \,\textrm{hours}} = x \,\textrm{C}^{\circ}$

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$\dfrac{42}{7} = x$

By using two different methods, we can determine that the change each hour was equal to 42/7 C° per hour.

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3 years ago