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One has 60 teeth and it makes 50 complete revolutions in a minute. How many complete revolutions will the second gear complete, if it has 40 teeth?
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One has 60 teeth and it makes 50 complete revolutions in a minute. How many complete revolutions will the second gear complete, if it has 40 teeth?

User JoeCamel
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8.5k points

2 Answers

6 votes
60/50= 1.2

1.2= 40x
x=40/1.2
x=33.3
User Jimbotron
by
6.6k points
2 votes
Write and solve the equation of 2 ratios:

60 teeth 50 rev
-------------- = -------------
40 teeth x

x= 3000/40 = 75

The smaller (40 tooth) gear will make 75 rev in a min.
User Netawater
by
7.5k points
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