Question

It takes 4 1/2 minutes for Elton John to listen to his favorite song on a record recorded at 45 r.p.m. (revolutions per minute). One day, Elton accidentally played this record at 33 1/3 r.p.m.'s. What was the number of revolutions required to play the song? What was the amount of time it took to play it at 33 1/3 r.p.m.?
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Answer 1

i got 3.333

Answer 2

10/3

Answer 3

I can figure out the amount of time it took to play 33 1/3 rpms, but I don't get your first question about number of revolutions required to play the song. I could have sworn it was just stated to be 45 rpms

Answer 4

Well, if it s playing for 4.5 min at 45r (revolutions) per minute then we simply multiply 4.5 times 45 to get 202.5 revolutions in order to play the song

Answer 5

Oh

Answer 6

that's what they meant

Answer 7

I'm an idiot

Answer 8

Now if it takes 202.5 revoltions to play the song, and we want to know how long it will take to play at 33 and 1/3 rpms, we simply divide 202.5rev/33.3 r/m, to get 6.075 minutes

Answer 9

Nice