Question

An express train runs at a speed of 105km/hour. What distance does it take in 4 hours 12 minute​

Answer 1

$speed = \frac{distance}{time} \\ 105 = \frac{d}{4 hours+ \frac{12}{60}hours } \\ 105 = \frac{d}{ \frac{20 + 1}{5} } \\ 105 = \frac{5d}{21} \\ 21 = \frac{d}{21} \\ d \: = 441km \\ MARK IT AS \\ BRAINLIEST AND \\ FOLLOW ME \:$