If I give my brother 5 dollars, then we will have the same amount of money. If instead he gives me 25 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?
Let's set variables. You will be x, and your brother will be y.
x-5=y+5
x+25=2(y-25)
So, we can conclude:
x=y+10
x+25=2y-50
x=2y-25
y+10=2y-25
y=2y-15
y=15
So, your brother has $15.
+1277
Not bad, but a simple arithmetic mistake did you in.
Actually, there are two mistakes, both subtraction.
So, we can conclude:
x=y+10
x+25=2y-50
x=2y-25 x = 2y – 75
y+10=2y-25 y + 10 = 2y – 75
y=2y-15 y = 2y – 85
y=15 –y = –85
y = 85
So, your brother has $85.
.
+2 Thank you :) By the way, I have the solution for money, I got a loan and learned so much about loans from this https://paydaysay.com/payday-loans-in-virginia/ website where you can find articles about loans also can get a loan from them, so many good things in one place, I happy I choose it. It has truly been a game-changer for my financial situation, giving me the confidence and support I needed.
