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.)
How much time will Ram take to reach Chandu's house, if he travels at the speed at which he travels to Hari's house
Solution
While going to Hari's house
The distance is $$2.5\times1.75=4.375$$ km
The time taken is $$4\times1.2=4.8$$ hours
Average speed = $$\dfrac{4.375}{4.8}=0.911$$ kmph
While going to Chandu's house
The distance is $$4.5\times1.75=4.375$$ km
As the distance and speed is same as that while going to Hari's house, the time taken will also be the same.
Hence, the time taken is 4.8 h.
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