Q175. A marking machine marks 100 dots at a rate of 60 dots per hour and then another 100 dots at a rate of 40 dots per hour. What is the average rate of marking for the entire process?Mathematics — Quadratic Equations — Question 175 of 200A. 45 dots/hourB. 48 dots/hourC. 50 dots/hourD. 52 dots/hourPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →