Bobby can read 10 pages and complete 15 word problems in 30 minutes. How long will it take him to do his homework if he has 30 pages to read and 45 word problems? Refer to the time in minutes.

Answer 1

If Bobby can read 10 pages and complete 15 word problems in 30 minutes, then he can read 1 page in 30/10 = <<30/10=3>>3 minutes.
Also, he can complete 1 word problem in 30/15= <<30/15=2>>2 minutes.
If Bobby has 30 pages to read, he will take 30*3 = <<30*3=90>>90 minutes to read them all.
Similarly, if he has 45 word problems, he will take 45*2 = <<45*2=90>>90 minutes to complete them all.
Therefore, it will take Bobby 90+90 = <<90+90=180>>180 minutes to complete his homework. Answer: \boxed{180}.