Question 770526
{pure sugar}/{resulting solution}={concentration of resulting solution}


u = unknown ounces of 20% glucose
w = unknown ounces of water

{{{20*u/(u+w)=10}}} and {{{u+w=3}}}



STEPS
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20u=10u+10w
10u=10w
u=w
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u+w=3
if u=w then substitute
u+u=3
2u=3
u=3/2
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{{{highlight(u=1&1/2)}}} AND {{{highlight(w=1&1/2)}}} ounces