Answer:
The average speed of car is 67 kilometers per hour.
Step-by-step explanation:
Given that:
Distance travelled in one hour = 45 km 
Distance travelled in next 2 hours = 78*2 = 156 km 
Total distance = 45+156 = 201 
Total time = 1+2 =  3 hours 
Average speed of the car = 
Average speed of the car = 
Average speed of the car = 67 km/hr
Hence,
The average speed of car is 67 kilometers per hour.
 
        
             
        
        
        
<span>-12 = pico(p)
So 10^-12 L = 1 pL
Use following to find the count of 10^-12 L are there in 2.3×10^-10 L
2.3×10^-10 / (10^-12) = 2.3×10^2 = 230 pL
-6 = micro (µ)
4.7×10^-6 g = 4.7 µg
1.85×10^-12 m = 1.85 pm
6 = Mega (M)
16.7×10^6 s = 16.7 Ms
So the answer is 16.7 Ms</span>
        
             
        
        
        
4/15=x/75
4*75=15*x
300=15x
x=300/15
x=20
        
             
        
        
        
Answer:

Step-by-step explanation:



