Problema Solution
House a is three times as old as the house b. Nine years ago house a was four times as old as house b. How old is each house?
Answer provided by our tutors
a = 3b
a - 9 = 4(b - 9)
........
click here to see the system of equations solved for a and b
........
a = 81 years
b = 27 years
House a is 81 years old.
House b is 27 years old.