SOLUTION: Ali is 14 years old. His mother is three times as old as he is. In x years' time, his mother will be twice as old as Ali. Form an equation in x and hence find x.

Question 1051835: Ali is 14 years old. His mother is three times as old as he is. In x years' time, his mother will be twice as old as Ali. Form an equation in x and hence find x.
Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
.
Ali is 14 years old. His mother is three times as old as he is. In x years' time, his mother will be twice as old as Ali.
Form an equation in x and hence find x.
~~~~~~~~~~~~~~~~~~~~~~~~~

Ali's mother is 3*14 = 42 years now.

In x years . . . 

2*(14 + x) = 42 + x.

28 + 2x = 42 + x,

2x - x = 42 - 28,

x = 14.

Answer. In 14 years.

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