Question

15% of $9 is $_______ * Show Work *

12 is ___% of 200 * Show Work *

Answer 1

15% of $9 is $1.35, calculated by multiplying the decimal equivalent of 15% (0.15) by $9. Also, 12 is 6% of 200, found by creating a proportion of 12 to 200, equivalent to x to 100, and solving for x.

Step-by-step explanation:

To find 15% of $9, first convert 15% to a decimal by dividing by 100. This gives us 0.15. Then multiply this decimal by the total cost:

$9.00 × 0.15 = $1.35

So, 15% of $9 is $1.35.

Next, to find what percent 12 is of 200, set up a proportion where 12 is to 200 as x is to 100 (since percentages are parts of 100):

12 / 200 = x / 100

Multiply both sides by 100 to solve for x:

12 / 200 × 100 = x

Which simplifies to:

x = 12 × 100 / 200 = 6

So, 12 is 6% of 200.

Answer 2

when solving these types of equations, i usually use the phrase: criss-cross multiply, divide by the lonely guy lol

x=unknown number
15/100=x/9 solve for x
15*9=100x simplify
135=100x divide both sides by 100
135/100=x simplify
x= $1.35

x/100=12/200 solve for x
12*100=200x simplify
1200=200x divide both sides by 200
1200/200=x simplify
x= 6%