# Math

A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?

1. Maths

posted by Tarefa
2. use a simple ratio
let the number of revolutions in 1 km be n

n/1000 = 20/42
x = 1000(20/42) = 10000/21 or appr 476.2 revolutions

posted by Reiny

## Similar Questions

1. ### Math

A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?
2. ### 6th grade

a bicycle wheel must make 13 revolutions to roll 25 meters. How many revolutions must the wheel make to travel 1 km? Hint: 1000 m = 1 km
3. ### Trigonometry

A bicycle with a 26-inch wheel(diameter) travels a distance of 700 feet. How many revolutions does the wheel make?
4. ### Math

10. Bicycle speedometers are programmed based on the number of revolutions the wheel turns per second. A bike wheel spins 480 times in 1 minute. What is the rate per second? a. 1 revolution per second b. 8 revolutions per second
5. ### Physics

A bicycle wheel that initially spins at 3 revolutions per second is braked uniformly to a stop in 1 second. A spot is painted at the outer edge of the wheel. How many revolutions does the spot go during the time it takes the wheel
6. ### Physics

A bike wheel rotates uniformly through 2 revolutions in 3 seconds. a) what is the period of the wheel's rotation? T=3rev/2s=1.5s b) what is the frequency of the wheel's rotation? (in Hertz) f=1/T =1/1.5 =.666Hz c) what is the
7. ### physics

A bicycle wheel of radius 0.4 m is spinning at a rate of 40 revolutions per minute. What is the centripetal acceleration of a point on the edge of the wheel? What is the period of the wheel's motion?
8. ### Math

A bicycle wheel is 30 inches in diameter. a. to the nearest revolution, how many times will the wheel turn if the bicycle is ridden for 3 miles. b. suppose the wheel turns at a constant rate of 2.75 revolutions per second. What is
9. ### trigonometry

these two are the same type of questions but i have no clue how to figure out the answer. i have tried drawing it out but don't know what to do after that. 1. a bicycle with a 28-inch wheel(diameter) travels a distance of 800
10. ### physics

A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

More Similar Questions