# Washer

Washing machine drum wash at 71 RPM. Washing machine motor pulley has diameter 8 cm. What must be the diameter of the drum machine pulley when the motor is at 351 RPM?

Correct result:

D =  39.5 cm

#### Solution: We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you! Tips to related online calculators
Need help calculate sum, simplify or multiply fractions? Try our fraction calculator.
Check out our ratio calculator.
Do you want to convert length units?
Do you want to convert velocity (speed) units?

#### You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem:

## Next similar math problems:

• Fraction and a decimal Write as a fraction and a decimal. One and two plus three and five hundredths
• Fraction to decimal Write the fraction 3/22 as a decimal.
• Ratio 11 Simplify this ratio 10 : 1/4
• Write 2 Write 791 thousandths as fraction in expanded form.
• In fractions An ant climbs 2/5 of the pole on the first hour and climbs 1/4 of the pole on the next hour. What part of the pole does the ant climb in two hours?
• Ratio of counts There are 15 boys and 13 girls in the class. What are the ratio of boys and girls?
• Bicycle The bicycle pedal gear has 36 teeth, the rear gear wheel has 10 teeth. How many times turns rear wheel, when pedal wheel turns 120x?
• Bicycle wheel After driving 157 m bicycle wheel rotates 100 times. What is the radius of the wheel in cm?
• Zdeněk Zdeněk picked up 15 l of water from a 100-liter full-water barrel. Write a fraction of what part of Zdeněk's water he picked.
• Reciprocal equation 3 Solve reciprocal equation: 1/2 + 2/3=1/x
• Andre Andre, Thomas, and Ivan split 88 postage stamps in a 2:5:4 ratio. How much did Thomas get?
• Tree trunk Calculate the average tree trunk with a circumference of 149 cm.
• Pipe Steel pipe has a length 2.5 meters. About how many decimetres is 1/3 less than 4/8 of this steel pipe?
• Report 2 A School reports students to teacher ratio of 6:1. If there are 45 teachers in the School, how many students are there?
• Round table A tablecloth should be sewn on a round table with a diameter of 78 cm, which should extend around the table by 10 cm. How many cms of ribbons need to be bought for edging?
• Athlete How long length run athlete when the track is circular shape of radius 120 meters and an athlete runs five times in the circuit?
• Velocipede The front wheel of velocipede from year 1880 had a diameter 1.8 m. If the front wheel turned again one then rear wheel 6 times. What was the diameter of the rear wheel?