Question

An online bookseller charges $3 per book for shipping. John places an order for four books that have the same price. The total cost of his order is $30. What is the price in dollars of each book ?

Answer 1

here the shipping of 4 books costs $12.
and total cost is $30. so the cost of 4 books is $ 18. hence the cost of per book is $4.5. hope this helps.

Answer 2

Answer: $5.75

Step-by-step explanation:

if we take off his extra costs, (The $3 charge and 4 x$1 shipping) So $7 in total.

$30 - $7 = $23 So the cost of the 4 books is $23

As they have the same price, each book costs $23/4 = $5.75