Question

for every 140 feet that kelly rides on her bicycle the wheels turn 20 times about how many do the wheels turn in five miles

Answer 1

GIVEN :

Number of turns made by the wheels of Kelly's bicycle in every 140 feet = 20

TO FIND :

The number of turns made by the wheels of the bicycle in 5 miles.

SOLUTION :

• To find the required answer, we first need to convert 5 miles into feet.

• The measurement of 1 mile in feet is 5280 feet,

=> The measurement of 5 miles in feet = 5 × 5280 feet = 26,400 feet

• According to the question,

Number of turns made by the wheels in 140 feet = 20

• By applying unitary method, we can calculate the number of turns made by the wheels in 1 foot. Unit means 1.

∴  If the bicycle makes 20 turns in 140 feet, then the number of turns made by the wheels in 1 foot = 20 / 140

• Now, the number of turns made by the wheels in 26,400 feet will be more.

• So, the number of turns made by the wheels in 26,400 feet = (20 / 140) × 26,400

= 3771.43 ≈ 3771

• Since 26,400 feet = 5 miles, it can also be said that the number of turns made by the wheels in 5 miles is equal to 3771.

Answer - The wheels turn 3771 times in five miles.