Could anyone let me know if I have done this
problem correct?
A gold bracelet is discounted at 40% and sold
for $750. Find the regular price of the bracelet.
I have it being $1050.00
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Let's check that answer and see if it's correct:
Let regular price = $1050.00
Multiply by .40, get $420
Subtract from regular price, get $1050 - $420
Set that equal to selling price:
$1050 - $420 = $750
$630 = $750
Nope! 'fraid that's wrong!
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Let's do it correctly, exactly the same way
we checked your answer above, but this time
we'll using $x instead
Let regular price = $x
Multiply by .40, get $.40x
Subtract from regular price, $x - $.40x
Set that equal to selling price:
$x - $.40x = $750
Now solve for x:
Multiply through by 10
10x - 4x = 7500
6x = 7500
x = 1250
So the correct answer is $1250.00
Solving a word problem is exactly like checking an
answer in it to see if it is correct, only you use
x instead of the number you're checking, and at the
end you solve for x.
Edwin
