Question

PLEASE HELP!!! I'll mark brainliest! and lots of points! ( I need help, I don't understand any of this!)

Answer 1

So for this there is going to be two equations; One showing how much they earned total and one showing how much more Garth made.

Let x mean how much Sandi made and y mean how much Garth made.

The first equation is going to be $x+y=425$

The second equation is going to be $y=x+25$ .

I'll be using the substitution method since that is already set up for it. So in the first equation substitute y for x+25 since the second equation tells us that is the equivalent to y.

And your equation should look like this: $x+x+25=425$ . From here you can solve for x. 

Combine like terms to get $2x+25=425$

Subtract 25 on each side to get $2x=400$

Divide 2 on each side to get $x=200$


Now that we had got what Sandi had earned, we can substitute x for 200 in either equation to solve for y. I'll be solving for y in the second equation.

$y=200+25 \\ y=225$


To sum it up, Sandi earned $200 and Garth earned $225.

Answer 2

Garth earned $25 more then Sandi, so take 

$425 - $25 = $400
$400 divided by 2 = $200 for Sandi and $200 for Garth and then add the $25 to garth's money and you have your answer hope this helps