I really need extra credit in my Algebra class, so my teacher told me if I could answer this question, I would get bonus points. Either this question is for Einstein, or I'm missing some sort of equation.

"A particular disc can be made to rotate at 2 different speeds. If it were made to rotate slower by 135 revolutions per hour, it would require an additional 2.7-hours to make 315 revolutions. Find the higher speed at which it can operate."

That's all the question says...Could someone help me?

"A particular disc can be made to rotate at 2 different speeds. If it were made to rotate slower by 135 revolutions per hour, it would require an additional 2.7-hours to make 315 revolutions. Find the higher speed at which it can operate."

That's all the question says...Could someone help me?