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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.)
If Abhay's, Ram's and Bhalu's houses are in a straight line, then how muchtime will Ram take to reach Bhalu's house from Abhay’s house,if he is travelling at 0.5 km/h?
The distance between Abhay's and Ram's house is
$$1.5\times1.75=2.625$$ km
The distance between Bhalu's and Ram's house is
$$4.5\times1.75=7.875$$ km
Hence, the total distance to be travelled is 2.625 + 7.875 = 10.5 km
Given the speed is 0.5 kmph
So, the time taken is $$\dfrac{10.5}{0.5}=21$$ h
