Alex is driving at a constant rate of 50 miles per hour. How far will Alex travel in: 2 hours, 4.3 hours, 20 minutes?

At 2 hours, Alex would have drove 100 miles, because 50 MPH * 2 hours = 100 miles.

At 4.3 hours, Alex would have drove 215 miles, because 50 MPH * 4.3 hours = 215 miles.

At 20 minutes, Alex drove 16.5 miles because 50 MPH *.33 (1/3 of an hour) = 16.5 miles.

50 * 2 = 100

in 2 hours Alex will travel 100 miles

50 * 4.3 = 215

in 4.3 hours Alex will travel 215 miles

50 * 20/60 = 16 2/3 miles {convert minutes to hours by dividing by 60}

in 20 minutes Alex will travel 16 2/3 miles