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?

The wheels turn in about 3770 times in 5 miles

Step-by-step explanation:

First of all we have to go 5 miles to yards

1 mile = 1760 feet

5 miles = 5 * 5280 feet

5 miles = 26400ft

now we calculate how many yards it takes to get the wheels turn in 1 time

140ft /20 = 7ft

finally we divide the number of yards by the 7 yards and we will get how many times It turn the wheels

26400ft / 7ft = 3770.43

The wheels turn in about 3770 times in 5 miles

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m