A) 600
B) 800
C) 900
D) 1000
Correct Answer: B
Solution :
Number of revolutions, the spin drier makes in 60 seconds = 600 revolutions. Number of revolutions, the drier will make in 80 seconds i.e., 1 minute 20 second \[=\frac{600}{60}\times 80=800\,\]revolutions.You need to login to perform this action.
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