Question

One size vinyl record ur a at a speed of 33 1/3 revolutions per minute. If a song lasts 3 1/2 minutes, how many times would the record spin?

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Answer 1

Answer:
`348(2)/(3)` times.

Explanation:

Given : One size vinyl record ur a at a speed of
`33(1)/(3)` revolutions per minute.

In improper fraction:
`33(1)/(3)=(3(33)+1)/(3)=(100)/(3)`

Duration of song =
`3(1)/(2)` minutes

In improper fraction:
`3(1)/(2)=(3(2)+1)/(2)=(7)/(2)`

The number of revolutions: Speed x Time

=
`(100)/(3)*(7)/(2)=(350)/(3)=348(2)/(3)`

Hence, the record spin
`348(2)/(3)` times.