A motorist drives at 100 km/h. How many minutes will it take her to travel d km
To calculate how many minutes it will take the motorist to travel d km, we need to convert the speed from km/h to km/min first.
We know that 1 hour is equal to 60 minutes, so to convert km/h to km/min, we divide the speed by 60.
Therefore, the motorist's speed in km/min is 100 km/h ÷ 60 min/h = 5/3 km/min.
Now, to find how many minutes it will take to travel d km, we divide the distance by the speed.
Time = Distance ÷ Speed
Time = d km ÷ (5/3 km/min)
Time = (3/5) * d min
Therefore, it will take her (3/5) * d minutes to travel d km.