Question

Brandon is half of Ella's age. Ella is three times Tristans age. In fifteen years, their combined age will be 89. How old is Brandon?

Answer 1

Answer:

Step-by-step explanation:

Let Brandon's age be $x$

Therefore Ella=$2x$

Tristan= $\frac{2x}{3}$

Fifteen years time add 15 to each age

Brandon: $x+15$

Ella: $2x+15$

Tristan:$\frac{2x}{3} +15$

All their ages together=89

So: $x+15$ +  $2x+15$ + $\frac{2x}{3} +15$$=89$

$3\frac{2}{3} x=44$

$x= \frac{44}{3\frac{2}{3} } =12$