EXAMPLE:

Shown in the table are the grades in Mathematics 6 of a certain student in the first and the second quarters. What is the percent of increase in his grades?

Subject First Quarter Second Quarter
MATHEMATICS 6 82 88

Solution:



Answer: The percentage of increase in the student’s grade during the second quarter is 7.31%.
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EXERCISE:

Solve the problem.

1. The water billing of the Luna family in December 2020 was Php 528.00. The following month, it was Php 607.20.

2. Mang Canor’s average daily income as a jeepney driver was Php 460.00. In this pandemic, he only earns Php 240.00 a day. What is the percentage of change?
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PERFORMANCE TASK:

Study any of the following monthly bills at home (water, electricity, phone). Compare two succeeding months’ billings.

1. Solve the percentage of increase or decrease.
2. State the reason/s for the increase or decrease.