Question

An object covers a distance of 200 km from A to B.it covers first 50 km with a uniform speed of 50 km/h what is its speed for remaining distance if the average speed is 60 km/h

Answer 1

Answer:

Explanation:

Distance =1.2 Km and Time =40 min = \dfrac{40}{60} \: hr =\dfrac{2}{3} \: hr  

\therefore  Speed =\dfrac{Distance}{Time} =1.2 Km \div \dfrac{2}{3} \: hr=(1.2 \times \dfrac{3}{2}) \: Km/h=1.8 \: Km/h

vishal