<PRE><B>Question 1109642</B>
 John is 10 years younger than two times Mary. Mary’s age is to her mother’s age as John’s age is to his father’s age. Mary’s mom is 36 and John’s father is 40. How old is John?
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J = 2M-10
M/m = J/f
m = 36 ; f = 40
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J = 2M-10
M/36 = J/40
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J = 2M-10
J = (40/36)M
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2M-10 = (10/9)M
(1 1/9)M = 10
(10/9)M = 10
Mary = 9 years
J = 2M-10 = 8 years
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Cheers,
Stan H.
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