Answer:
There are 23 dimes in the box
Step-by-step explanation:
Let nickels=n
Let dimes=(35-n)
Equation: 0.05n+0.10(35-n)=2.90
Multiply both sides by 100: 5n+10(35-n)=290
-5n+350=290
-5n=-60
n=12
35-12=23
Therefore, there are 23 dimes in the box
8.8 miles with 132 gallons of gas. You do 132 divided by 15 to get 8.8.
The selling price is <u>$29.40</u>
<h3>
EXPLANATION</h3>
10% of $21 = $2.10
$2.10 x 4 = $8.40 = 40%
$21 + $8.40 = <u>$29.40</u>
Hope this helps!
