We are given that Marci finishes in 60 minutes. To determine the time it takes Bobby to finish his homework we will use the fact that it is 50% of 60, like this:
[tex]B=60\times\frac{50}{100}=\frac{3000}{100}=30[/tex]Therefore, Bobby finishes in 30 minutes.
If Max time is 150% of Marci's time, then we can calculate his time using the following:
[tex]M=60\times\frac{150}{100}=\frac{9000}{100}=90[/tex]Therefore, Max finishes in 90 minutes.
