Question

Greta read a 900 pages book in 15 days, reading for 5 hours every day.

How many pages per hour did she read?

Answer 1

so she reads for 5 hours every day for 15 days, how many hours is that? well is just 5*15, or 75 hours.

so, she reads 900 pages in 75 hours, how many pages does she do in 1 hour?


`\bf \begin{array}{ccll} pages&hours\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 900&75\\ p&1 \end{array}\implies \cfrac{900}{p}=\cfrac{75}{1}\implies \cfrac{900\cdot 1}{75}=p`