Question

Dominick weighs 30 pounds more than his sister. Together they weigh 330 pounds. How much does Dominick weigh?

Answer 1

Dominik is 180 pound

Answer 2

Domik weights 30 pounds more than his sister

Together they weigh 330 pounds

Let "x" represent the weight of Dominik's sister, then his weight can be expressed as "x+30"

And their total weight can be calculated as:

`x+(x+30)=330`

From this expression you can calculate the value of x:

`\begin{gathered} 2x+30=330 \\ 2x+30-30=330-30 \\ 2x=300 \\ (2x)/(2)=(300)/(2) \\ x=150 \end{gathered}`

x=150 pounds

x+30=150+30=180 pounds

Dominik weights 180pounds and his sister 150 pounds