Explanation:
We have,
Ajoba and Prav drive to work. Ajoba drives 45 miles in 2.5 hours. Prav drives 74 km in 1 hour 15 min.
1 mile = 1.6 km
45 miles = 72.42 km
74 miles = 119.0 km
1 hour 15 min means 1.25 hours
Average speed of Ajoba is :
[tex]v_1=\dfrac{72.42 }{2.5}=28.96\ km/h[/tex]
Average speed of Prav,
[tex]v_2=\dfrac{119}{1.25}=95.2\ km/h[/tex]
Difference in average speed of Ajoba and Prav is :
[tex]v=v_2-v_1\\\\v=v_2-v_1\\\\v=95.2-28.96\\\\v=66.24\ km/h[/tex]
So, the difference in average speed of Ajoba and Prav is 66.24 km/h.
