"ROA=\\frac{net\\ incom}{average\\ total\\ assets}"
x-profit for one unit or ROA for unit
y-quantity of sales
"profit=x*y"
"ROA=\\frac{x*y}{average\\ total\\ assets}"
"16.5=\\frac{x*4,200,000}{\\frac{58,925,500+x*4,200,000}{2}}*100"
"0.165=\\frac{2x*4,200,000}{58,925,000+x*4,200,000}"
"9,722,625+693,000x=2x*4,200,000"
"2.31=2x-0.165x"
"x=1.26"
"0.165*(58,925,000+x*4,500,000)=2x*4,500,000"
"9,722,625+742,500x=2x*4,500,000"
"2.16=2x-0.165x"
"x=1.18"
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