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29 July, 20:56

lisa is 6 years older than her brother Tom. Their father's age is twice the sum of their ages. How old is Lisa if her father is 32?

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Answers (2)
  1. 29 July, 21:18
    0
    32 = 2 (x + 6)

    32/2 = 16

    16 = x + 6

    16 - 6 = 10

    10 = x, Lisa is 10.
  2. 29 July, 21:19
    0
    L = T+6

    F = 2 (L+T)

    F = 32

    2 (L+T) = 32

    2 (L+L-6) = 32

    2L-6=16

    L=11

    Lisa is 11 years old
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