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An appliance store reduced the price of a refrigerator by 20% and then raised the price by 10% from the lower price. What was the original price of the refrigerator, if the final price was $70.40?

1 Answer

Jul 20, 2016

$$ 80$ $$80$

Explanation:

A drop of 20 % means find 80% = $\times 0.8$ $xx 0.8$
An increase of 10% means find 110% = $\times 1.1$ $xx 1.1$

Let the original price be $x$ $x$ . We can follow what was done to this price in the form of an equation.

Decreased by 20% then raised by 10%..

$x \times 0.8 \times 1.1 = 70.40$ $x xx0.8 xx1.1 = 70.40" "$ Now just solve for $x$ $x$

$x = \frac{70.40}{0.8 \times 1.1}$ $x = 70.40/(0.8 xx1.1$

= $$ 80$ $$80$

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