FOCUS Read and answer each questions below. Write your answers in your notebook
1. What is the base in the statement: "40% of 80 is 32."?
2. What is the rate in the statement: "5% of 50 is 2.5."?
3. What is the percentage in the statement: -25% of 60 is 15."?
4. How do you find the percentage in a problem if the base and rate are known or given?
5. How do you find the base in a problem if the percentage and rate are given?
6. How do you find the rate in a problem if the percentage and base are given? 7.
How do you solve this problem: Out of 20 pupils in the playground, 20% are boys. How many boys are in the playground?
1. What is the base in the statement: "40% of 80 is 32."?
2. What is the rate in the statement: "5% of 50 is 2.5."?
3. What is the percentage in the statement: -25% of 60 is 15."?
4. How do you find the percentage in a problem if the base and rate are known or given?
5. How do you find the base in a problem if the percentage and rate are given?
6. How do you find the rate in a problem if the percentage and base are given? 7.
How do you solve this problem: Out of 20 pupils in the playground, 20% are boys. How many boys are in the playground?
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Answer:
1. 40% of 80 is 32.
2. 5% of 50 is 2.5.
3. 25% of 60 is 15.
4. To find the percentage, multiply the base by the rate. Remember that the rate must be changed from a percent to a decimal before multiplying can be done. Rate times base equals the percentage
5. B=P÷R
You can find Base by dividing Percentage and Rate:
Ex:
20% is 8 of what number?
P=8
R=20
Turn the rate into decimal and then divide the rate by percentage,
20% of N= 8
=8÷0.20
=40
The Base is 40
20% of 40 is 8
6. RATE (R=P/B) – The ratio of the amount to the base. It is written as a percent.
7. There are 4 boys in the playground
Step-by-step explanation:
7.
Base = 20
Rate = 20%
Percentage = ?
Formula:
P = B × R
P = 20 × 0.2
P = 4