Answer:
7.5 hours
Step-by-step explanation:
Using the variable 't' for time, you can set up an equation to find out how long it will take the truck to catch up to the  bus.  Since the bus is traveling at 60mph and the truck is traveling 1 2/3 times faster, we need to first find the rate of the truck: 
1

Using 't' and the knowledge that they will have traveled the same distance we the truck catches up to the bus and the fact that the truck left 3 hours later: 
60t = 100(t - 3)  or 60t = 100t - 300 
Solve for 't':  60t - 100t = -300 or -40t = -300  so, t = 7.5 hours
 
        
                    
             
        
        
        
Answer:
2
Step-by-step explanation:
2×4+5-3= 
8+5-3=10
10/5=2
 
        
             
        
        
        
Answer:
549 ft
Step-by-step explanation:
take 670ft away from 1,220 ft ( not all the way sure of I'm right)