The average cost of a book is $$ \$ A $$. (i) The total cost of 8 books is $$ \$ 36 $$. Find the value of $$ A $$. (ii) Onswer(c)(i) $$ A=\ldots \ldots \ldots $$ The cost of this book is $$ \$ 6.60 $$. Find the new value of $$ A $$. Answer(c)(ii) $$ A=\ldots \ldots $$

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(i) $$ A = 4.50 $$ (ii) $$ A = 6.60 $$ (i) To find the average cost of a book $$ A $$, we can use the formula for average cost: $$ A = \frac{\text{Total Cost}}{\text{Number of Books}} $$ Given that the total cost of 8 books is $$ \$ 36 $$, we can substitute the values into the formula: $$ A = \frac{36}{8} $$ Calculating this gives: $$ A = 4.50 $$ So, the value of $$ A $$ is: Answer(c)(i) $$ A = 4.50 $$ (ii) Now, if the cost of a book is $$ \$ 6.60 $$, we need to find the new average cost $$ A $$. Assuming we still consider the same 8 books, the total cost would now be: $$ \text{Total Cost} = 8 \times 6.60 = 52.80 $$ Now we can find the new average cost $$ A $$: $$ A = \frac{52.80}{8} $$ Calculating this gives: $$ A = 6.60 $$ So, the new value of $$ A $$ is: Answer(c)(ii) $$ A = 6.60 $$

The average cost of a book is \( \$ A \). (i) The total cost of 8 books is \( \$ 36 \). Find the value of \( A \). (ii) Onswer(c)(i) \( A=\ldots \ldots \ldots \) The cost of this book is \( \$ 6.60 \). Find the new value of \( A \). Answer(c)(ii) \( A=\ldots \ldots \)

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The average cost of a book is \( \$ A \). (i) The total cost of 8 books is \( \$ 36 \). Find the value of \( A \). (ii) Onswer(c)(i) \( A=\ldots \ldots \ldots \) The cost of this book is \( \$ 6.60 \). Find the new value of \( A \). Answer(c)(ii) \( A=\ldots \ldots \)

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