$c (x) = 600 + \frac{5}{2} x$ and $R (x) = 4 x$ re respectively, the cost and Revenue function of a cassette company where $x$ is number of cassettes produced. The number of cassettes to be produced and sold so as to realise a profit is

x \geq 300

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x \geq 400

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x \geq 350

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x \geq 275

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Solution

The correct option is B $x \geq 400$
Profit $P (x) = R (x) - c (x)$
$= 4 x - 600 - \frac{5}{2} x = \frac{3}{2} x - 600$
$\frac{3}{2} x - 600 > 0$
$x > 400$
$∴$ (2) is correct

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c(x)=600+52x and R(x)=4x re respectively, the cost and Revenue function of a cassette company where x is number of cassettes produced. The number of cassettes to be produced and sold so as to realise a profit is

The correct option is B x≥400Profit P(x)=R(x)−c(x)=4x−600−52x=32x−60032x−600>0x>400∴ (2) is correct

$c (x) = 600 + \frac{5}{2} x$ and $R (x) = 4 x$ re respectively, the cost and Revenue function of a cassette company where $x$ is number of cassettes produced. The number of cassettes to be produced and sold so as to realise a profit is

The correct option is B $x \geq 400$
Profit $P (x) = R (x) - c (x)$
$= 4 x - 600 - \frac{5}{2} x = \frac{3}{2} x - 600$
$\frac{3}{2} x - 600 > 0$
$x > 400$
$∴$ (2) is correct