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If 'A' is twice as old as 'B' and 'B' is 10 years old, how old is 'A'?

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Question: If \'A\' is twice as old as \'B\' and \'B\' is 10 years old, how old is \'A\'?

Options:

  1. 10
  2. 20
  3. 15
  4. 25

Correct Answer: 20

Solution: 

\'A\' is twice \'B\'s age, so \'A\' is 20 years old.

If 'A' is twice as old as 'B' and 'B' is 10 years old, how old is 'A'?

Practice Questions

Q1
If 'A' is twice as old as 'B' and 'B' is 10 years old, how old is 'A'?
  1. 10
  2. 20
  3. 15
  4. 25

Questions & Step-by-Step Solutions

If 'A' is twice as old as 'B' and 'B' is 10 years old, how old is 'A'?
  • Step 1: Identify the age of 'B'. We know that 'B' is 10 years old.
  • Step 2: Understand that 'A' is twice as old as 'B'. This means we need to multiply 'B's age by 2.
  • Step 3: Calculate 'A's age by multiplying 10 (B's age) by 2. So, 10 * 2 = 20.
  • Step 4: Conclude that 'A' is 20 years old.
  • Age Relationships – Understanding how to calculate one person's age based on another's age using multiplication.
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