Karen can read 10 pages and complete 15 math problems in 30 minutes. How long will it take to do her schoolwork if she has 30 pages to read and 45 math problems to complete?

Answer 1

Karen can read 1 page in 30/10 = <<1=1>>1.5 minutes.
She can complete 1 math problem in 30/15 = <<1=1>>1 minute.
It will take her 1.5 x 30 = <<1.5*30=45>>45 minutes to read 30 pages.
It will take her 1 x 45= <<1*45=45>>45 minutes to complete 45 math problems.
It will take Karen a total of 45 + 45 = <<45+45=90>>90 minutes to do her schoolwork. Answer: \boxed{90}.