Direction: Complete the table by writing the missing percentage, rate or base.
percentage. rate. base.
1. 20%. 15
2. 4 80
3. 3 25%
4. 12% 75
5. 30 300
percentage. rate. base.
1. 20%. 15
2. 4 80
3. 3 25%
4. 12% 75
5. 30 300
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Answer:
Base (B) * Rate (r) = Percentage (P)
1. r = 20%, B=15
15*0.2 = P
P = 3
2. P = 4, B = 80
80*r = 4
r = 4/80
r = 0.05
r = 5%
3. P = 3, r = 25%
B*0.25 = 3
B = 3/0.25
B = 12
4. r = 12% B = 75
75*0.12 = P
P = 9
5. P = 30 B=300
300*r=30
r = 30/300
r = 0.1
r = 10%
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