Question

If a revolving restaurant can rotate 270° in 45 minutes, how long does it take for the restaurant to make a complete revolution?

Answer 1

270/360 = 0.75 = 3/4 of a complete revolution

45 minutes = 3/4 of an hour

 so it is doing 1/4 of a revolution every 1/4 hour

 so it would take 1 hour to do a complete revolution

Answer 2

The answer is one hour. 360-270=90 90 is a fourth of 360. 45 minutes is 3/4 of an hour so yeah