Question 993564: Danny and Mary want to go to a concert next weekend. the tickets will cost $70. After Mary gives Danny all the money she has in her wallet. Danny must come up with $5 less than twice Mary's contribution to pay for the tickets. How much will each contribute for the tickets?
Answer by addingup(3677)   (Show Source):
You can put this solution on YOUR website! Mary gave her money to Danny. We'll call her money x
Danny must come up with $5 less than 2x, this is, 2x-5. Finally:
x+2x-5= 70 add 5 on both sides
x+2x= 75 Add x on left
3x= 75 Divide both sides by 3
x= 25 This is how much money Mary gave Danny. So, Danny must come up with:
25*2-5= 50-5= 45 This is the amount Danny must come up with. Let's see if it's true:
25 Mary + 45 Danny = 25+45= 70 We've got the right answer.
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