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1 September, 18:32

Robert is x years old.

Hannah is 7 years younger than Robert

The sum of their ages is 61.

How old are Hannah and Robert?

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Answers (1)
  1. 1 September, 18:57
    0
    Hannah is 27 years old.

    Robert is 34 years old.

    Step-by-step explanation:

    Robert = x

    Hannah = x - 7 ("7 years younger than Robert")

    Robert + Hannah = 61

    x + (x - 7) = 61

    x + x - 7 = 61

    2x - 7 = 61

    2x = 61 + 7

    2x = 68

    x = 68 : 2

    x = 34

    Robert = 34

    Hannah = x - 7

    Hannah = 34 - 7

    Hannah = 27
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