Question 1133754
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At one point in time, their ages were: M = 30; B = x; K = 2x.  (Kenny was twice Bala's age when Mike was 30).<br>
At another point in time, their ages were: M = 2y; B = 21; K = y.  (Mike was twice Kenny's age when Bala was 21).<br>
The number of years between those two times is the same for each of them:<br><pre>
30-2y = x-21 = 2x-y<br>
30-2y = x-21  -->  x+2y = 51; x-21 = 2x-y  -->  y-x = 21<br>
x+2y = 51  and  y-x = 21  -->  3y = 72  -->  y = 24<br></pre>
So Mike was 48 and Kenny was 24 when Bala was 21.<br>
So the difference between Mike's age and Bala's age is 27 years.<br>
So when Mike is 62, Bala will be 35.