SOLUTION: Lani is twice as old as Liza.the quotient of their ages five years ago was seven less than Liza's present age.find their present age

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Question 885337: Lani is twice as old as Liza.the quotient of their ages five years ago was seven less than Liza's present age.find their present age
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
%282z-5%29%2F%28z+-5%29+=+z-7
2z -5 = z^2 - 12z + 35
z^2 - 14z + 40
(z-10)(z-4) = 0, z = 10, Liza present age. Lani is 20
and
15/5 = 3