Guess the ages of the couple ?
Let the present ages of Bob and Alice be a and b respectively.
From given conditions:-
12 years ago=>
3
__ * (a-12) = b – 12 ———————-(1)
4
Now=>
5
__ * a = b —————————(2)
6
from equations (1) and (2)=> 3/4(a-12) = (5/6)*a – 12
=>3a/4-9 = 5a/6 – 12
=>5a/6-3a/4 = 12-9
=> a/12 = 3
=> a = 36
Putting the value of a in equation (2) => b = 30
Present ages of Bob and Alice are 36 and 30 respectively. Thus, 12 years ago their ages would have been 24 and 18 respectively.
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