Answered

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Please help I don't know how to do this.!

Please Help I Dont Know How To Do This class=

Sagot :

reinhard10158

Step-by-step explanation:

x = original price

first I show you the line of thinking and why the short approach at the end would work.

100% = x

1% = 100%/100 = x/100

25% = 1% × 25 = x/100 × 25 = x/4

but careful, these 25% are not the sale price, they are only the discount.

so, the sale price is actuality 100% - 25% = 75% of the original price.

so, we need actually

75% = 3×25% = 3x/4

and now we can solve :

40 = 3x/4

3x = 160

x = 160/3 = 53.333333... ≈ $53.33

FYI - the short, direct method is simply to divide by the percent factor.

x = 40 / 75/100 = 40/0.75 = 53.333333...

if you compare it with the long form and think it through, you will see why this works.

let me know if you need any further explanations.

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