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Three years ago, A was 5 times as old as B. If B is now 10 years old, how old is

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Question: Three years ago, A was 5 times as old as B. If B is now 10 years old, how old is A now?

Options:

  1. 25
  2. 30
  3. 35
  4. 40

Correct Answer: 30

Solution: 

Three years ago, B was 7 years old. Therefore, A was 5 * 7 = 35 years old. Now, A is 35 + 3 = 38 years old.

Three years ago, A was 5 times as old as B. If B is now 10 years old, how old is

Practice Questions

Q1
Three years ago, A was 5 times as old as B. If B is now 10 years old, how old is A now?
  1. 25
  2. 30
  3. 35
  4. 40

Questions & Step-by-Step Solutions

Three years ago, A was 5 times as old as B. If B is now 10 years old, how old is A now?
Correct Answer: 38
  • Step 1: Determine B's age three years ago. Since B is now 10 years old, three years ago B was 10 - 3 = 7 years old.
  • Step 2: Find A's age three years ago. According to the question, A was 5 times as old as B three years ago. So, A's age was 5 * 7 = 35 years old.
  • Step 3: Calculate A's current age. Since three years have passed since then, A's current age is 35 + 3 = 38 years old.
  • Age Relationships – Understanding how to relate the ages of two individuals over time.
  • Basic Arithmetic – Performing multiplication and addition to solve for unknowns.
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