Question

Stephanie is x years old. Tobi is twice as old as Stephanie. Ulrika is 3 years younger than Tobi. The sum of all their ages is 52 years. Work out the value of x.

Answer 1

Answer:

$x=11$

Step-by-step explanation:

Stephanie is $x$ years old.

Tobie is $2x$ years old.

Ulrika is $2x-3$ years old.

$x+2x+2x-3=52$

$5x-3=52$

$5x=52+3$

$5x=55$

$\frac{5x}{5} =\frac{55}{5}$

$x=11$

Answer 2

Answer:

$x = 11$

Step-by-step explanation:

Stephanie = x

Tobi = 2x

Ulrika = 2x-3

$x + 2x + 2x + 3 = 52 \\ 5x - 3 = 52 \\ 5x = 52 + 3 \\ 5x =55 \\ \frac{5x}{5} = \frac{55}{5} \\ x = 11$

hope this helps