O = $1 coins , T = $2 coins
T + O = 20
T = 1.5 O
substituting ... 1.5 O + O = 20
solve for O , then substitute back to find T
When "cashing out," Jose has a total of 20 $1 and $2 coins with 50% more $2 coins than $1 coins.
MUST BE SYSTEM OF EQUATIONS
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