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17 November, 14:49

On Serena's 10th birthday her mom was 3 times her age. How old will Serena and her mom be when her mom's age times 0.5 equals Seren'a s age?

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  1. 17 November, 18:46
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    Serena's mom would be 60 years old.
  2. 17 November, 18:47
    0
    When Serena is 10, her mom is 3*10=30. Her mom is 20 years older than Serena.

    If her mom's age divided by half is equal to Serena's, then she will be twice as old as Serena.

    20 + 20 = 40

    20 * 2 = 40

    Serena will be 20, her mom will be 40.
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