Question

By selling a tv for ₹ 24000 a shop keeper makes a profit of 20%.find c.p?

Answer 1

$let \: cp \: be \: x \\ 24000 = x + 20\% \: of \: x \\ 24000 = x + \frac{20x}{100} \\ 24000 = \frac{120x}{100} \\ x = \frac{24000 \times 100}{120} \\ x = 20000$