Step-by-step explanation:
Let grandson's age be x.
Let grandpa's age be y {equation : y = 8+5x}
so, 
x + y = 88
or, x + 8+ 5x = 88 (substituting the value of y)
or, 6x + 8 =88
or, 6x = 88-8
or, 6x = 80
or, x = 80/6
so, x = 13.33
so grandson's age = 13.33
grandpa's age = 8 + 5x = 8 + (5×13.33) = 74.65 yrs
 
        
             
        
        
        
Answer:
It will take him 15 hours to travel 6 miles
Step-by-step explanation:
2.5 miles per hour times 6 miles= 15 hours
 
        
             
        
        
        
Multiplying fractions is simple. You just multiply across so 7/3 x 2/3 is 14/9 and that is the simplest form.
        
                    
             
        
        
        
9514 1404 393
Answer:
   115 square units
Step-by-step explanation:
The area of a parallelogram is the product of base length and height. The height is the perpendicular distance between the bases.
   A = bh
   A = (23)(5) = 115 . . . . square units