Answer:
Explanation:
A rate of speed is a measure of how much distance per unit of time.
Whenever we see the word 'per', that means we think of division.
rate of speed = distance/time
So, speed = (49 miles) / (1 and 3/4 hours)
speed = (49 miles) / (7/4 hours)
speed = 49 / (7/4) miles/hr
with fractions, division is the same as multiplication by the inverse
speed = 49 / (7/4) miles/hr = 49 * (4/7) miles/hr = (49 * 4)/7 mph =
= 196/7 mph = 28 mph
To check it, multiply 28 mph by 1 & 3/4 hrs and you will get 49 miles, the distance traveled.
I hope this helps.