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ICSE Class 7 Answered

Gurpreet jogs a distance of 12 km in 40 minute. Find his speed in km/h and m/s.
Asked by truptimayeesahoo100 | 28 May, 2019, 04:11: PM
answered-by-expert Expert Answer
begin mathsize 16px style We space know space that space 1 space hr space equals space 60 space mins rightwards double arrow 40 space mins space equals space 40 over 60 space equals space 2 over 3 space hrs Speed space equals space fraction numerator Distance space over denominator Time space end fraction equals 12 space divided by space space space 2 over 3 equals space 12 space cross times space 3 over 2 space equals space 18 space km divided by hr We space know space that space 1 space min equals space 60 space secs space rightwards double arrow 40 space mins space equals space 40 space cross times 60 space equals space 2400 space secs space space 1 km space equals space 1000 space straight m rightwards double arrow space 12 space km space equals space 12 space cross times space 1000 space equals space 12000 space straight m space space Speed space equals space fraction numerator Distance space over denominator Time space end fraction equals 12000 over 2400 equals space 5 straight m divided by sec end style
Answered by Yasmeen Khan | 28 May, 2019, 04:59: PM

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ICSE 7 - Maths
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