We know that:
- Leonard can read 5 pages in 15 minutes
- Penny can read 15 pages in 1 hour
And we must find how much longer it would take Penny to read a 600-page book than Leonard.
To find it we can use two tables with the information and find the time will take Leonard and Penny read a 600 pages book using rule of 3
Rule of 3:
1. Leonard:
Then, using rule of 3
[tex]x1=\frac{15\cdot600}{5}=1800[/tex]
So, read a 600 page book will take Leonard 1800 minutes.
2. Penny:
[tex]x2=\frac{60\cdot600}{15}=2400[/tex]
So, read a 600 page book will take Penny 2400 minutes.
So, the difference between Penny and Leonard would be
[tex]2400minutes-1800minutes=600minutes[/tex]
