Page 72 - BUSINESS MATHEMATICS MODULE 1 (WHOLE)_revised 10.20.2020

LESSON 5.A: PERCENTAGE

Example 2:

During the last C.PA. exams, 18 percent of the 23,000 examiners passed the
exams. How many passed the exams?

Solution:

Given: B = 23,000 examiners

R = 0.18

P = ?

P = B × R

P = 23,000 × 0 .18
P = 4,140 examinees

• Finding the Rate

To find the rate, let us first convert the basic formula P = B × R by dividing both
sides of the equation by B. We know that dividing both sides of the equation by B does not
change the value of the equation.

P = B × R

P B×R
=
B B
P P
= R or R =
B B

Example 1:

Our Gross National Product in 1979 was valued at about F89 billion. In 1980, this
value increased by P5.34 billion. What was our GNP growth rate?

Solution:

Given: P = ₱5.34 billion
B = ₱89

R = ?
P
R =
B
₱5. 34
R =
₱89
R = 0.06 or 6%

Page | 5.2 BUSINESS MATHEMATICS: MODULE 1