Multiple Choice Questions on Mohan walks from Tilak Nagar to Moti Nagar and back in a certain time at the rate of 3 5 km hr But i........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Mohan walks from Tilak Nagar to Moti Nagar and back in a certain time at the rate of 3 5 km hr But i...........

Quantitative Aptitude ( CCS) Time & distance
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    Mohan walks from Tilak Nagar to Moti Nagar and back in a certain time at the rate of 3.5 km/hr. But if he had walked from Tilak Nagar to Moti Nagar at the rate of 3 km/hr and back from Moti Nagar to Tilak Nagar at the rate of 4 km/hr., he would have taken 10 minutes longer. The distance between Tilak Nagar and Moti Nagar is

    28 km

    Incorrect Answer

    14 km

    Correct Answer

    24 km

    Incorrect Answer

    18 km

    Incorrect Answer
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    Explanation:

    Let distance is X km.

    1st Case ,. Speed = 3.5km/hour

    time taken = X/3.5 +X/3.5 

    =2X/3.5 = 20X/35 hour
    1st Speed = 3km/h & 2nd Speed =4km/h

    Time taken = X/3 +X/4 

    = (4X +3X)/12 = 7X/12

    7X/12 - 20X/35 =10/60

    (245X -240X)/420=10/60

    5X/420=10/60

    5X=70

    x=70//5

    x=14km

    So Distance between Tilak Nagar and Moti Nagar is 14 Km.

    Hence, option 2 is the correct answer

    By: Amit Kumar
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