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Sagot :
Find out how many revolutions it makes in 1 second.
9/10 * 3 = 27/10 = 2.7
Set up a proportion.
There are 60 seconds in a minute.
2.7/1 = x/60
Cross multiply:
x = 2.7 * 60
x = 162
So it will make 162 revolutions a minute.
9/10 * 3 = 27/10 = 2.7
Set up a proportion.
There are 60 seconds in a minute.
2.7/1 = x/60
Cross multiply:
x = 2.7 * 60
x = 162
So it will make 162 revolutions a minute.
Answer:
162 RPM
Step-by-step explanation:
Start by multiplying 9⁄10 by the Multiplicative Inverse of ⅓, which is 3:
9⁄10 ÷ ⅓ → 9⁄10 × 3 = 2 7⁄10
After this, multiply the result by sixty seconds, since there are sixty seconds in one minute:
60 × 2 7⁄10 = 162
So, it will make 162 RPM.
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