Question

8) A company sells small and large photo books. Each page of a small photo book costs

Answer 1

38 pages of the book will cost $57.

Data;

• number of page = 20
• cost = $30

Proportions

To solve this question, we have to know the cost of one page of the book.

In the first scenario, 20 pages cost $30, let's find the cost of one page here.

$20 page = \ 30\\1 page = x\\x = \frac{30}{20}\\x = 1.5$

We can confirm our answer here by testing with the second scenario;

$32 page = \ 48\\1page = y\\y = \frac{48}{32} = 1.5$

Now can say that one page of the book cost $1.5, let's divide 57 by this to determine the number of pages

$z = \frac{57}{1.5} \\z = 38$

From the calculations above, 38 pages of the book will cost $57.

Learn more on proportions here;

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