SOLUTION: 1.There are 230 third and fourth grade students in a certain elementary school. If there are 30 more third graders than fourth graders,how many third graders are in the school?

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Question 983561: 1.There are 230 third and fourth grade students in a certain elementary school. If there are 30 more third graders than fourth graders,how many third graders are in the school? thank you
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x, thirdgraders
y, fourthgraders
system%28x%2By=230%2Cx-y=30%29

Elimination Method will be the easiest to use.

%28x%2By%29%2B%28x-y%29=230%2B30------what happens?

%28x%2By%29-%28x-y%29=230-30-------what happens?