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4 years ago

08

Mathematics

2 answers:

OLga [1]4 years ago

7 0

Number 1 is 64$ I check it with my math

kirill115 [55]4 years ago

5 0

Answer:

1. $64

2. 20%

3. 25%

4. $65.50

Step-by-step explanation:

1. 80 x 20% = ?

method = 80 x 0.20 = 16 = $16 80-16 = 64 = $64

2. 14 x ? % = $11.20

method = We divide 11.20/14 = 0.8 = 0.80 = 80% inverse of 80% = 20%

proof 14 x 0.20 = 2.80 so; 14 -2.80 = $11.20

3. 1000 x ? = $750

method = 1000/750 = 0.75 0.75 = 75% inverse on original price = 25%

4. $55 x 10% = ?

method = 55 x 1.10 = 65.5 = $65.50

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