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If a book costs $15 and a customer buys 3 books, how much does he spend in total

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Question: If a book costs $15 and a customer buys 3 books, how much does he spend in total?

Options:

  1. $30
  2. $40
  3. $45
  4. $50

Correct Answer: $45

Solution: 

Total cost = 3 books × $15/book = $45.

If a book costs $15 and a customer buys 3 books, how much does he spend in total

Practice Questions

Q1
If a book costs $15 and a customer buys 3 books, how much does he spend in total?
  1. $30
  2. $40
  3. $45
  4. $50

Questions & Step-by-Step Solutions

If a book costs $15 and a customer buys 3 books, how much does he spend in total?
  • Step 1: Identify the cost of one book, which is $15.
  • Step 2: Identify the number of books the customer wants to buy, which is 3.
  • Step 3: Multiply the cost of one book by the number of books: 3 books × $15/book.
  • Step 4: Calculate the total cost: 3 × 15 = 45.
  • Step 5: The total amount spent by the customer is $45.
  • Multiplication – The question tests the ability to multiply the cost of a single book by the number of books purchased.
  • Basic Arithmetic – It assesses the understanding of basic arithmetic operations, specifically addition and multiplication.
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