Refer to the data given in the diagram below and answer the questions that follow.
Abhay, Bhalu, Chandu, Damu, Ebrahim, Faizal, Gayatri and Hari are Ram's friends. The above diagram gives the distance of each of their houses and time taken by Ram to visit each of them.
A dark circle represents the Distance of particular person's house from Ram's house (Scale 1 division = 1.75 km).
A dark square represents the Time taken by Ram to reach a particular person's house starting from his house (Scale division = 1.2 hrs.)
Solution
While going to Damu's house
The distance is $$4\times1.75=7$$ km
The time taken is $$2.5\times1.2=3$$ hours
Average speed = $$\dfrac{7}{3}=2.33$$ kmph
While going to Bhalu's house
The distance is $$4.5\times1.75=7.875$$ km
The time taken is $$2.5\times1.2=3$$ hours
Average speed = $$\dfrac{7.875}{3}=2.625$$ kmph
While going to Faizal's house
The distance is $$5\times1.75=8.75$$ km
The time taken is $$3\times1.2=3.6$$ hours
Average speed = $$\dfrac{8.75}{3.6}=2.43$$ kmph
While going to Gayatri's house
The distance is $$4\times1.75=7$$ km
The time taken is $$2\times1.2=2.4$$ hours
Average speed = $$\dfrac{7}{2.4}=2.92$$ kmph
Hence, the max average speed is 2.92 kmph
