The average time spent on Facebook per day of 40 students in a Statistics class is 1.4 hours, while the average of the 32 students in the Calculus class across the hall is 1.9 hours. Two students from the Calculus class, who both do not use Facebook, decide to drop the course and enter into the Statistics class. What are the new daily average time spent on Facebook of the Statistics and Calculus classes, respectively?
The new averages were 1.3 and 2.0 I just can't figure out how they got those numbers
$40$ Stats students total time $40\cdot 1.4 = 56$ hrs
New average $= \frac{56}{42} = 1.3333$ hrs
$32$ Calc students total time $32\cdot 1.9 = 60.8$ hrs
New average $= \frac{60.8}{30} = 2.0267$ hrs