Answer:
Speed of Police Car = 110 km per hr
Step-by-step explanation:
Speed of Truck S(t) = 80 km p h
Distance = speed x time
Hence distance covered by truck in [tex]\frac{1}{10}[/tex] hours
[tex]\ D(t)= \ S(t) \times \frac{1}{10}[/tex]
[tex]\ D(t)= 80 \times \frac{1}{10}[/tex]
D(t)=8 km
Distance covered by police car = 3 km more than that of Truck
D(c) = 8+3=11 km
Time taken = [tex]\frac{1}{10} hours[/tex]
Speed = [tex]\frac{\ Distance }{\ time}[/tex]
Replacing those values
Speed = [tex]\frac{11}{\frac{1}{10}}[/tex]
Speed = [tex]11 \times 10[/tex]
Speed = 110 kmph
