Answer:
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Step-by-step explanation:
The cost per book is $3.41 thus the cost of buying 7 books will be $23.87 maintaining the given ratio.
The ratio is the division of the two numbers.
Proportion is the relation of a variable with another. It could be direct or inverse.
For example, a/b, where a will be the numerator and b will be the denominator.
As per the given,
The book fair had a sale where 6 books were $20.46.
Cost per book = 20.46/6 = $3.41
To buy 7 books,
The cost of buying 7 books at $3.41 per book will be,
⇒ 3.41 × 7 = $23.87
Hence "The cost per book is $3.41 thus the cost of buying 7 books will be $23.87 maintaining the given ratio".
For more information about ratios and proportions,
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