Problema Solution
Molly's father James is three years less then three times her age. How many years from now will Molly's father be twice her age if James is 33 now?
Answer provided by our tutors
let 'x' represent the age of Molly now
Molly's father James is three years less then three times her age:
3x - 3 = 33
by solving we find:
x = 12 years
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Molly is 12 years now.
let 't' represent the number of years from now when Molly's father will be twice her age:
33 + t = 2(12 + t)
by solving we find:
t = 9 years
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indeed 9 years from now Molly will be 12 + 9 = 21 years old while her father will be 33 + 9 = 42 years of age or 2*21 = 42 double her age.