📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

    Question

    A car is traveling at 50 km/hr. It increases its speed

    by 10 km/hr after y hours, and then travels for (y + 7) hours more. If the distance covered in the last (y + 7) hours is 720 km, find the distance covered in the first y hours.
    A 220 km Correct Answer Incorrect Answer
    B 250 km Correct Answer Incorrect Answer
    C 270 km Correct Answer Incorrect Answer
    D 200 km Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Initial speed = 50 km/hr New speed = 60 km/hr Distance in last (y + 7) hours: 60(y + 7) = 720 y + 7 = 720/60 = 12 y = 12 − 7 = 5 hours Distance in first y hours: Distance = 50y = 50*5 = 250 km

    Practice Next
    More Time and distance Questions

    Relevant for Exams:

    ask-question