#### Answer

1. $\frac{0.2 Pages}{1 minute}$
i.e. Patrick can write 0.2 page per minute
2. $\frac{5 minutes}{1 Pages}$
i.e. Patrick will take 5 minutes per page

#### Work Step by Step

Patrick Types 4 pages in 20 minutes.
1. We need to find rate in pages per minute.
First we try to put the detail in ration as $\frac{4 pages}{20 minutes}$
=$\frac{0.2 Pages}{1 minute}$
i.e. Patrick can write 0.2 page per minute.
2. We need to find rate in minutes per page.
First we try to put the detail in ration as $\frac{20 minutes}{4 pages}$
=$\frac{5 minutes}{1 Pages}$
i.e. Patrick will take 5 minutes per page.