30 minutes=30 minutes(1 hour / 60 minutes)=1/2 hour.
1)we calculate the speed.
speed=distance /time
Data:
distance=3 miles
time=1/2 hour
speed=3 miles / (1/2 hour)=6 miles/hour.
2)we calculate how long will it takeme to ski a distance of 36 miles.
speed=distance / time ⇒time=distance/ speed.
Data:
distance:36 miles
speed=6 miles/ hour.
time=36 miles / (6 miles/ hour)=6 hours
Answer: 6 hours.