Question

Mark Ronnie and Lisa bought a 75 inch curved 4000 television.Lisa put 650 more than Mark had.Mark had twice as much and then Ronnie plus $500 the total cost of the television was 2000.How much did everyone give to buy the television?
Mark 2x+500
Ronnie x
Lisa 650+2x+500
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Answer 1

So since you gave all of the equations of everyone's amount that they put in, it saves some work.

Let's add up everyone's contribution and then solve for x:

$(2x+500)+x+(650+2x+500)$

Then since we know the television costs $2,000, we can set this expression equal to that and simplify terms. Then we can solve for x:

$5x+1,650=2000$

$5x=350$

$x=70$

So since Ronnie put in 'x', we can say that Ronnie paid $70.

Since Mark put in '2x + 500', we can plug in 70 for x to find that Mark paid $640.

And since Lisa put in '650 + 2x + 500', we can plug in 70 for x again to find that Lisa paid $1,290.