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B. Exercises
Test 1. Directions : Identify the base, rate and percentage. Then, find the value of the unknown
Given
Base
Rate
Percentage
N
1. 10% of n is 5
N
10%
5
50
2.25 is n% of 100
3.5% of 350 is n
4. nis 20% of 80
5. 12 is n% of 48
6. 9 is 25% of n
,​


Sagot :

1. Base = n

Rate = 10%

Percentage = 5

n = 5 / 10% = 50

2. Base = 100

Rate = n

Percentage = 25

n = 25 / 100 = 25%

3. Base = 350

Rate = 5%

Percentage = n

n = 350 x 5% = 17.5

4. Base = 80

Rate = 20%

Percentage = n

n = 80 x 20% = 16

5. Base = 48

Rate = n

Percentage = 12

n = 12 / 48 = 25%

6. Base = n

Rate = 25%

Percentage = 9

n = 9 / 25% = 36