Definition of Percent
A percent refers to parts per hundred, while percentage is the result obtained by multiplying a number by
a percent.
Now, let’s do the computation. To find percent of a number, convert the percent into decimal number by
moving the decimal point two places to the left. Then multiply this decimal number to the given number.
Example:
Find 30% of 390
Solution:
30%=0.30
0.30 x 390=117
To find what percent a number is of another number, write a fraction where the numerator is part and the
denominator is whole. Simplify the fraction if possible. Then convert the decimal to percent.
Example:
What percent of 50 is 20?
Solution:
20 2
= =0.40∨40 %
50 5
Therefore, 20 is 40% of 50.
Finding Percentage, Rate and Base
A. Finding the percentage
Rules Examples
Percentage is obtained by Example # 1:
multiplying a number a percent.
The formula for computing the a. What is 80% of 50
percentage is
Solution: P=BxR=50x0.80=40
Formula: P=BxR
b. 60% of 150 is what number?
Where: P is the percentage given as
a part of the base or part of the Solution: P=BxR=150x0.60=90
total.
B is the base given as the Example # 2: Problem Solving:
total; and
R is the rate given as a Faye is planning to buy a new car through an auto loan
percent or decimal. financing scheme. To avail of a lower monthly amortization, she must
pay 30% of the purchase price of 648, 000.00 as down payment. How
much should she save for the down payment for a car?
Solution:
Down payment=purchase price x rate
=648,000x 0.30
=194,400
Faye should save 194, 400.00 for the down payment of a car.
B. Finding the Base
To find the base, simply divide the Example #1:
A percent refers to parts per hundred, while percentage is the result obtained by multiplying a number by
a percent.
Now, let’s do the computation. To find percent of a number, convert the percent into decimal number by
moving the decimal point two places to the left. Then multiply this decimal number to the given number.
Example:
Find 30% of 390
Solution:
30%=0.30
0.30 x 390=117
To find what percent a number is of another number, write a fraction where the numerator is part and the
denominator is whole. Simplify the fraction if possible. Then convert the decimal to percent.
Example:
What percent of 50 is 20?
Solution:
20 2
= =0.40∨40 %
50 5
Therefore, 20 is 40% of 50.
Finding Percentage, Rate and Base
A. Finding the percentage
Rules Examples
Percentage is obtained by Example # 1:
multiplying a number a percent.
The formula for computing the a. What is 80% of 50
percentage is
Solution: P=BxR=50x0.80=40
Formula: P=BxR
b. 60% of 150 is what number?
Where: P is the percentage given as
a part of the base or part of the Solution: P=BxR=150x0.60=90
total.
B is the base given as the Example # 2: Problem Solving:
total; and
R is the rate given as a Faye is planning to buy a new car through an auto loan
percent or decimal. financing scheme. To avail of a lower monthly amortization, she must
pay 30% of the purchase price of 648, 000.00 as down payment. How
much should she save for the down payment for a car?
Solution:
Down payment=purchase price x rate
=648,000x 0.30
=194,400
Faye should save 194, 400.00 for the down payment of a car.
B. Finding the Base
To find the base, simply divide the Example #1:
