Question 934865
{{{(N[300]+N[3700])/4000=75}}}
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{{{N[300]/300=60}}}
{{{N[300]=18000}}}
Substituting,
{{{(18000+N[3700])/4000=75}}}
{{{18000+N[3700]=300000}}}
{{{N[3700]=282000}}}
{{{A[3700]=282000/3700}}}
{{{A[3700]=76.2}}}