Question

a vehicle running at a speed 48km/hr . takes 6 hrs to complwte the journey . how much time will be taken to complete the journey if its speed is 72km/hr​

Answer 1

Step-by-step explanation:

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Answer 2

$\tt {v}_{1} = 48\:km\:{hr}^{-1} \:\:\:\:\:\: {t}_{1} = 6\:hours \\ \tt {v}_{2} = 72\:km\:{hr}^{-1} \:\:\:\:\:\:\: {t}_{2} = ? \\ \\ \tt We\:know\:that \\ \\ \tt V = \frac{d}{t} \\ \\ \tt d = vt \\ \\ \tt d = {v}_{1}{t}_{1} \\ \\ \tt d = {v}_{2}{t}_{2} \\ \\ \tt {v}_{1}{t}_{1} = {v}_{2}{t}_{2} \\ \\ \tt 48 × 6 = 72 × {t}_{2} \\ \\ \tt {t}_{2} = \frac{48×6}{72} \\ \\ \tt {t}_{2} = 4 \:hours \\ \\ \boxed{\bold{\underline{\green{\tt Time = 4\:hours}}}} \\ \\ \huge{\underline{\underline{\orange{\mathfrak{Shreya}}}}}$