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21 September, 06:45

you ride a bike for 2 hours at 25 km/hr then 3 hours at 34 km/hr. what is your average velocity (in km/hr) ?

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  1. 21 September, 07:06
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    30.4 km/hr

    Explanation:

    We are given;

    Speed in the first 2 hours as 25 km/hr Speed in the next 3 hours as 34 km/hr

    We are required to determine the average velocity in km/hr

    To get the average velocity we divide total distance by total time. Thus, we need to determine the total distance

    Distance = Speed * time

    Distance covered in the first 2 hours;

    = 25 km/hr * 2 hours

    = 50 km

    Distance in the next 3 hours

    = 34 km/hr * 3 hours

    = 102 km

    Therefore, total distance = 50 km + 102 km

    = 152 km

    Total time = 2 hrs + 3 hrs

    = 5 hours

    Therefore;

    Average speed = 152 km : 5 hours

    = 30.4 km/hr

    Thus, the average speed is 30.4 km/hr
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