Posted by Anonymous on .
Sally's grandfather is 67 tears old.
Sally is 19 years old.
At what age will Sally be exactly one third of her grandfather's age?
How old will her granfather be then?

Math problem solvimg 
Bosnian,
( 67 + x ) / ( 19 + x ) = 3 Multiply blth sides by ( 19 + x )
67 + x = 3 ( 19 + x )
67 + x = 3 * 19 + 3 * x
67 + x = 57 + 3 x
67  57 = 3 x  x
10 = 2x
2 x = 10 Divide both sides by 2
x = 10 / 2
x = 5
Salys age will be 19 + 5 = 24
Granfathes age will be 37 + 5 = 72
72 / 24 = 3