\({1 \over 2}\) of Danny's money is equal to \( {2\over 3}{}{}\) of Jeff's money. If they have $126
altogether, how much does Jeff have?
Answer = 54 x=Danny's money
y= Jeff's money
x+y126
1/2x-2/3y=0
x+y=126
x-4/3y=0
7/3y=126
2/3y=36
y=54
Verification: 54+36x2=126
1/2 d = 2/3 j d = 4/3 j
4/3 j + j = 126
j = 54 then d = 72