If someone runs 10 miles in 90 minutes their average speed is 6.67 mph
4 (four) miles
He runs 4 miles in 30 minutes or 1/2 hour. So if he kept the same pace he would cover (4) x (2) = 8 miles in 1 hour
He can run 9.6 miles in 88 minutes.
7.5 MPH
If someone runs 10 miles in 90 minutes their average speed is 6.67 mph
60 miles an hour x 30 minutes = 30 miles.
In 4.27 minutes he runs 1 mile so in 60 minutes he will run 60*1/4.27 = 14.05 miles (to 2 dp)
It is 9.0909... (repeating) mph.
= 2.5 / (15/60) miles/hour = 10 miles/hour
.5 miles per minute
4 (four) miles
A greyhound is the fastest canine on Earth; it can reach speeds of 45 miles per hour. However, the cheetah is the fastest feline and can reach up to 60 miles per hour. Although greyhounds are amazingly fast, the cheetah is faster.
He runs 4 miles in 30 minutes or 1/2 hour. So if he kept the same pace he would cover (4) x (2) = 8 miles in 1 hour
What is Jack's average speed for the entire trip?
He can run 9.6 miles in 88 minutes.
2.99 miles.