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  4. The cost and revenue functions of a product are given by c(x)=20 x+4000 and R(x)=60 x+2000 respectively where x is the number of items produced and sold. The value of x to earn Profit is

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Q. The cost and revenue functions of a product are given by $c(x)=20 x+4000$ and $R(x)=60 x+2000$ respectively where $x$ is the number of items produced and sold. The value of $x$ to earn Profit is

KCETKCET 2021Linear Inequalities

Solution:

$R(x)-c(x)>0 ; 60 x+2000-20 x-4000>0$
$x>50$