For every 140 feet that Kelly rides on her bicycle, the wheels turn 20 times. About how many times do the wheels turn in 5 miles? (1 mile = 5,280 feet)

3771.43 times [roughly 3771 times]

Step-by-step explanation:

The unit ratio given is:

140 feet : 20 times

How many feet is that per 1 time wheel turning?

140/20 = 7 feet

So, each wheel revolution covers 7 feet [1 time turn = 7 feet]

Now,

We want the number of times wheel turns in 5 miles. First, converting 5 miles to feet:

1 mile = 5280 ft

5 mile = 5 * 5280 = 26,400 feet

Hence, the number of times it turns in 5 miles is:

26,400 feet / 7 feet = 3771.43 times [roughly 3771 times]