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3 years ago

5

A computer sells for $610. It is now on sale for 1/5 off the original price. Derek has a coupon for an extra 10% off the sale pr

ice. To the nearest dollar, how much less than the original price will Derek pay for the computer.

1 answer:

belka [17]3 years ago

8 0

Derek will pay $625.25 less than the original prize

<u>Step-by-step explanation:</u>

The selling price of the computer=$610

The selling prize is 1/5 of its original prize

Derek has a 10% off coupon

Let the original prize of the computer=x

selling prize=x-x/5

4x/5=610

4x=3050

x=3050/4=762.5

$The\ prize\ at\ which\ Derek\ will\ buy\ the\ computer=x \times 1/5 \times (100-10)/100\\=x\times 1/5 \times 90/100\\=9x/50\\$

the difference in the original prize and the prize at which Derek bought the computer=x-9x/50

=41x/50

$41 \times 762.5/50\\=$625.25$

Derek will pay $625.25 less than the original price for the computer.

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<u><em>Find the distance CD</em></u>

substitute the values

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