Abegail --- x years
Alger ---- x-7 years
x(x-7) = 144
x^2 - 7x - 144 = 0
(x - 16)(x + 9) = 0
x = 16 or x = -9, the last does not make sense.
sub back in my definitions
Alger is 7 years younger than abegail and the product of their age is 144.how old is each?
2 answers
If Alger is x, then Abigail is x+7. So, just solve for x in
x(x+7) = 144
Note that 144 = 9*16
x(x+7) = 144
Note that 144 = 9*16