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?

Answer 1

Given :

No of times the wheels run when Kelly rides the bicycle for 140 feet = 20 times:

To find:

No of times the wheels run when Kelly rides the bicycle for 5 miles =? :

Solution:

• No of times the wheels run when Kelly rides for 1 feet = $= \frac{20}{140} times$ :

• Converting the given distance miles into feet :

 ∴ 1 mile = 5280 feet

$5 miles = 5280 \times 5 feet\\ = 26400 feet$

• No of times the wheels run when Kelly rides for 26400 feet =

    $26400 \times \frac{20}{140} \\=26400 \times \frac{1}{7} \\=3771.42$

 So the no of times the wheels run when Kelly rides for 5 miles

= 3,771 times

Answer 2

Answer:

For every 140 feet that Kelly rides on her bicycle, the wheels turn 20 times. The wheel therefore turns 3771.43 times in 5 miles.

Step-by-step explanation:

To answer this question, we need to write down the conversion between miles and feet.

We have that:

1 mile = 5280 feet

So, 5 miles is equivalent to:

5280 × 5 = 26400 feet

We have that:

140 feet = 20 times

26400 feet = ?

By cross-multiplication we have:

26400/140  ×  20 = 3771.43

So, the wheel turns approximately 3771.43 times.