Answer:
A
Step-by-step explanation:
1/4 off is the same as 25% off
Let's say that d=20 *This is just a random number (divisible by 4) that will serve as a check
If the pillow is at 25% off, you'll pay 75% of the price d (100%-25% off = what you pay).
Here, they want to know the # of $ you are saving (so the 25% of d)
ex: d= 20
d x 1/4 = amount $ saved
20 x 1/4 is the same as 20 divided by 4.
In that case (if d=20), you'd save 5$ (20/4). Let's check if this answer is correct. If the amount saved is d/4 (25% of d *ex: d=20), then the amount you pay is 75% of d (75/100 is the same as 3/4).
full price - $ saved = $ you pay
20- 5 = 15$
Now, is 15$ 3/4 of d (d=20)? (if 1/4 are saved 4/4 -1/4 = 3/4 are payed) *This will verify our answer
20 x 75% is the same as 20 x 3/4 = 15$
*This means that our answer is correct. d/4 were saved if you pay d x 3/4
*Notice that to check the answer, you can take a # to be your d and check if your answer makes sense.
* If you are comfortable with variables, you can solve it without the need to pick a "test number" to be your d.
And just do 25% of d is the same as 1/4 x d
**Trick: anytime you see "of" replace it by a multiplication symbol
25% of d is 25/100 x d
