Bunuel wrote:
After receiving a 25% discount, Amanda pays $240 for a TV. How much would the TV cost without the discount?
A. $180
B. $300
C. $320
D. $360
E. $400
Let x = the original price (BEFORE the discount)
If Amanda received a 25% discount, then she paid 75% of the original price.
In other words, she paid 75% of x
We're told she paid $240, so we can write: 75% of x = $240
Or we can write: 0.75x = 240
ASIDE: One approach here is to divide both sides by 0.75, but this can be a pain for many students.
Another option is to convert 0.75 to a fraction, and then go from there.
Here's what I mean.
We get: (3/4)x = 240
Multiply both sides by
4/3 to get: (
4/3)(3/4)x = (
4/3)240
Simplify: x = 320
Answer: C
Cheers,
Brent
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