4. A train covers a distance of 480 miles in 8 hours. If it travels at a constant speed,
how fast is it traveling?
a. 50 mph
c. 70 mph
'b. 60 mph
d. 80 mph
5. A bicyclist travels 60 kilometers in 3 hours. What is the cyclist's average speed?
a20 kph
c. 60 kph
b. 40 kph
d. 80 kph​