Here speed of first train is slower than speed of second train. So if they catch up , the distance traveled will be same since they left the same station at different times.
But the time traveled will be different .
Let us say the two trains meet at time t ,
Distance = speed * time 
Distance traveled by first train = 40 t
Since second train is leaving after three hours , so 
Distance traveled by second train = 60(t-3)
As discussed earlier, distance traveled will be same, so

distributing 60 over t-3




t=9
So the second train will meet the first at 9 p.m.
 
        
                    
             
        
        
        
Answer:
156 degree 
Step-by-step explanation:
supplementary angle add up to 180 degree
180 - 24
= 156
 
        
             
        
        
        
It’s definitely is A,D, and C
        
                    
             
        
        
        
Answer:
i dont know what your asking
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
32
Step-by-step explanation:
The face closest to us has 4 by 4 unit cubes which is 16 cubes.
There are 2 faces deep in the cubiod so the total is 32 unit cubes.