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If the ratio of the ages of A and B is 3:4 and the sum of their ages is 70, what is A's age? (2022)

Practice Questions

1 question
Q1
If the ratio of the ages of A and B is 3:4 and the sum of their ages is 70, what is A's age? (2022)
  1. 30
  2. 35
  3. 40
  4. 45

Questions & Step-by-step Solutions

1 item
Q
Q: If the ratio of the ages of A and B is 3:4 and the sum of their ages is 70, what is A's age? (2022)
Solution: Let A's age be 3x and B's age be 4x. Then, 3x + 4x = 70, giving 7x = 70, so x = 10. Thus, A's age = 3x = 30.
Steps: 0

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