PEMDAS is the acronym for brackets, exponents, division, subtractions, multiplication. Given two or more operations, the PEMDAS letters series tells you, before the calculation is complete, what you can measure first, second and third.
1 revolution: 360 degrees. 1 Hour= 60 minutes. 60x3000= 180000 ( number of revolutions per hour) 3600 seconds in a hour. 180000/ 3600 = 50 so therefore 60
