Question

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)​

Answer 1

To cover 5 miles the wheel covers 3771.42 (approx) turns.

Step-by-step explanation:

Given,

In 20 times turns wheel covers 140 feet.

1 mile = 5280 feet

To find the number of times wheels turns to cover 5 miles.

We will apply unitary method.

Now,

5 miles = 5×5280 feet = 26400 feet

140 feet covers in 20 turns

1 feet covers $\frac{20}{140}$ turns

26400 feet covers in  $\frac{20}{140}$×26400 turns

= 3771.42 (approx) turns