1. 504=3x
x=168
2. 64=20m
m=3.2
        
             
        
        
        
Answer:
   16%
Step-by-step explanation:
The additional wage amount is $80.
The original wage amount is $500.
The ratio of the two is ...
   $80/$500 = 0.16 = 16/100
To express that ratio as a percentage, multiply it by 100%.
   0.16 × 100% = 16%
_____
It might help you to think of the percent sign (%) as a fancy way to write "per hundred" (/100). Of course, using your knowledge of place value, you know that 0.16 = sixteen hundredths = 16/100. 
Realizing the meaning of the % sign, you can immediately write this as 16%.
 
        
             
        
        
        
Correct answer is: P(x<6) is 0.123 and it is usual.
Solution:-
Given that the time a person takes to decide which shoes to purchase follows normal distribution. Which has mean = 8.21 minutes and standard deviation 1.90
Then probability of individual takes less than 6 minutes is
P(X<6) = 
            = 
            = 0.1230
Typically we say an event with a probability less than 5% is unusual.
But here P(X<6) = 0.123 is greater than 5% hence this is usual.
 
        
             
        
        
        
Answer:
should be 63 
Step-by-step explanation: