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What percent of 300 is 45?
 P * 330= 45 ***divid 300 in to 45
 P= 300/45
 P= .15
 P= 15%

38 is what percent of 304
 38/304= P ***divid 304 in to 38
 .125 = P
 125% = P

12 is 15% of what number?
 12 = 0.15 *N *** divid .15 into 12
 12/0.15 = N
 80=N

What number is 6% of 12?
 N= 0.06*12
 N= 0.72
 Therefore, 0.72 is 6% of 12

23 1/3% of 900 is what number?
23 1/3% = 70/30 * 1/100= 7/30
 Answer:
 7/30 *900= N
 210= N

69% of $21 is what number?

rate of change = the change (divided by) original amount

A doctor's basic office fee was increased from $6 to $7.50. Find the percent increase.
Rate of change = the change of rate (divided by) original amount. In this case the change represents an increase ($1.50); hence ,

rate of increase = increase (divided by) original fee
 rate of increase = $1.50/$6
 rtae of increase = 0.25 or 25%

Eyeglass frams priced at $18.20 are to be remarked to $14.56 because the style change.
 original price = $18.20
 the change = $3.64
 Determine the rate of decrease...
 20%: $3.64/$18.20 = 0.2

Steve saved $576 from his annual income of $6,000. What percent of his income did he save?
 1. Determin what the the problem is asking you to find
 a. The savings ($576) is what percent of his annual income ($6,400)
 2. State the problem
 b. $576 is what percent of $6,400
 3. Estimate the answer
 c. observe what 10% of the annual income would be $640 saved; hence the answer would be slightly less than 10%
 4. Solve and check Problem
 d.
 P= $576/ $6,400
 P= 0.09
 p= 9%
 check: 9% * $6400 = $576

