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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