Question

Tyler is 4 years older than tiffany in ten years he will be twicse as old a tifinay.

Answer 1

For this case we have to:

x: Variable that represents Tyler's age

y: Variable that represents Tiffany's age

According to the data of the statement we can propose the following equations:

$x = y + 4\\x + 10 = 2y$

To solve we substitute the first equation in the second equation:

$y + 4 + 10 = 2y\\14 = 2y-y\\14 = y$

So, Tiffany is 14 years old.

Then Tyler has:

$x = 14 + 4\\x = 18$

Tyler is 18 years old.

Answer:

Tyler: 18 years old

Tiffany: 14 years old