Hi 
Stephen and his five friends = 6 people at the restaurant 
Let's call X the amount of the bill. 
so if       X/6 = 13.21 
               X =  13.21 * 6 
                X = 79.26 
 
        
             
        
        
        
5 times 5 times 5 times 5 is 20
So just count by 5 
Hope this help
        
                    
             
        
        
        
Answer:
5 2/5
Step-by-step explanation:
(2 1/4) / x = (1 1/2) / (3 3/5)
so
x = (2 1/4) * (3 3/5) / (1 1/2)
 
        
             
        
        
        
Hey mate 
here is your answer 
length and width are given in the ratio are ;(4:7)
area of rectangle = (l×b)
therefore,
4x×7x=700
28x^2=700
x^2=700/28
x^2=25
x=5
length =4x=4×5=20, lenght =20 and width =7x so, 7×5=35 width.....