samahtorkyp0osth samahtorkyp0osth
  • 09-12-2017
  • Mathematics
contestada

Bob is three times as old as Mary. Four years from now, Bobwill be only twice as old as Mary. Find their present ages.

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loupickervance loupickervance
  • 09-12-2017
Bob is 12.
Mary is 4.
12+4 = 16. 
4+4 = 8.
16/2 = 8.
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