A group of 15 people each bought both a book that cost x dollars and a bookmark that cost $1. A group of 3 people each bought both a book that cost x dollars and a backpack that cost $36. Both groups spent the same amount of money. What is the price of the book?

The price of the book is $7.75.

Step-by-step explanation:

Let's first establish an equation.

If I buy a book costing dollars and a bookmark costing 1 dollars, I will have spent dollars. So a group of 15 people doing the same will have spent dollars.

Analogously, the group of 3 people has spent dollars.

Since we know that both groups spent the same amount of money, we can set the two expressions equal to each other:

Because was the price of the book, which was asked for in the question, we conclude that the answer is $7.75.

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.