Answer:
Option a. $13.44
Step-by-step explanation:
A hardware store sells a 5-pound box of nails for $16.80.
The store is having a 20% off sale on all items.
First we calculate 20% of $16.80
× 16.80
= 0.20 × 16.80 = $3.36
Now we subtract the discounted amount from the selling price.
The sale price of one 5-pound box of nails = $16.80 - $3.36 = $13.44
The sale price of one 5-pound box of nails would be $13.44
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3(x + 8) = 17....distribute the 3 thru the parenthesis
3x + 24 = 17...subtract 24 from both sides
3x = 17 - 24
3x = -7...divide both sides by 3
x = -7/3 or -2 1/3 <===
Here we're dividing a fraction (5/8) by another fraction. We could obtain the same result by inverting the divisor (2/5) and then multiplying (5/8) by (5/2).
The product is 25/16.
Thus, 2/5 divides into 5/8 25/16 times, or 1 9/16 times.
