Is he correct?

Question

a tutor earns d dollars per hour. He will be increasing his hourly wage by 10% starting next month. He tells one of his clients that his new wage can be determined by multiplying his previous wage by 1.1. Is he correct?

Answer 1

To increase d by 10% is the same as multiplying d by 1.10, so the new rate d' is

 

d' = 1.10 d = 1.1 d

 

He is correct.