Question

A car takes 7 hours to cover a certain distance at the speed of 48 Km/hr. If the speed is decreased by 20 Km/hr. How much time will it taken to cover the same distance ?​

Answer 1

Answer:

$time = 7hr \\ speed = 48kmph \\ distance = speed \times time \\ distance = 48 \times 7 \\ distance = 336km \\ if \: speed \: is \: decreased \: then \\ speed = 48 - 20 = 28kmph \\ distance = 336km \\ time = \frac{distance}{speed} \\ time = \frac{336}{28} \\ time =12hr$

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