So first let me assume that the Total profit of the racquets are 8 percentage and not individually.
Now to find the profit we can do 
20 x 100= 2000
Now 
8=x/2000*100
X= 160
And now for loss 
10x80=800
Now 
15= x/800*100
X=120 
Now profit =
160-120 = 40 
The profit was only 40
        
                    
             
        
        
        
<span>X = 65(7) 
X = 455
Marla did 455 sit-ups in a week</span>
        
             
        
        
        
Answer:
A = (cost per cup of coffee * number of cups) + balance
$15
Step-by-step explanation:
Given that :
Cost per cup of coffee = $1.50
Number of cups purchased = 4
Balance on card = $9
Let A = worth of gift card
A = (cost per cup of coffee * number of cups) + balance
A = (1.50 * 4) + 9
A = 6 + 9
A = $15
 
        
             
        
        
        
Answer:Amount = 10,002.21 
Step-by-step explanation:4 x 5 = 20 times
2.-
Principal = 5,000
Interest rate per yr = 3%
Compounded times per yr = 4
Time in years = 5
The formula is amt = p*(1 + r/n) ^ (n*t),
thus
Amount = 5,805.92
3.-
If Time in years = 23.2
then
Amount = 10,002.56
4.-
Principal = 5,000.00
Interest rate per yr = 5.82%
Compounded times per yr = 4
Time in years = 12