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

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Question: A is twice as old as B. If B is 10 years old, how old is A?

Options:

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

Correct Answer: 20

Solution: 

If B is 10 years old, then A is 2 * 10 = 20 years old.

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

Practice Questions

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

Questions & Step-by-Step Solutions

A is twice as old as B. If B is 10 years old, how old is A?
Correct Answer: 20 years old
  • Step 1: Identify B's age. B is 10 years old.
  • Step 2: Understand that A is twice as old as B.
  • Step 3: Calculate A's age by multiplying B's age by 2. So, A's age = 2 * 10.
  • Step 4: Perform the multiplication. 2 * 10 = 20.
  • Step 5: Conclude that A is 20 years old.
  • Age Relationship – Understanding the relationship between the ages of two individuals based on given conditions.
  • Basic Arithmetic – Applying multiplication to find the age of one individual based on the age of another.
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