clock question-minutes and degrees

[dwill]

A test began at 2:15 pm and ended at 3:50 pm . Through how many degrees had the minute hand turned?

I got 570 degrees. The solution my prof provided is 545 degrees.
I think that is a typo, is 570 the correct answer?

 

[Mrspi]

A test began at 2:15 pm and ended at 3:50 pm . Through how many degrees had the minute hand turned?

I got 570 degrees. The solution my prof provided is 545 degrees.
I think that is a typo, is 570 the correct answer?

One hour is 360 degrees, right?

From 2:15 to 3:50 is 1 hour and 35 minutes, or 1 35/60, or 1 7/12 hours.

1 7/12 * 360 = 19/12 * 360/1

Do the computation...who's right?

 

[dwill]

A test began at 2:15 pm and ended at 3:50 pm . Through how many degrees had the minute hand turned?

I got 570 degrees. The solution my prof provided is 545 degrees.
I think that is a typo, is 570 the correct answer?

One hour is 360 degrees, right?

From 2:15 to 3:50 is 1 hour and 35 minutes, or 1 35/60, or 1 7/12 hours.

1 7/12 * 360 = 19/12 * 360/1

Do the computation...who's right?

Thanks.