Question 1097515
100 units of corn at p percent corn


Remove 25 units of original mixture and replace with 25 units of 100% corn.
{{{(75p+25*100)/100=55}}}

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{{{75p+25*100=55*100}}}
{{{75p=55*100-25*100}}}
{{{75p=30*100}}}
{{{p=(30*100)/(3*25)}}}

{{{highlight(p=40)}}}--------------40% corn, the original mixture