Question

कौन सी संख्या 10% बढ़ाए जाने पर 352 हो जाती है?

Answer 1

$\frac{final - initial}{initial} \times 100 = percent \: change \\ \frac{352 - initial}{initial} \times 100 = 10 \\ \frac{352 - initial}{initial} = \frac{10}{100} = \frac{1}{10} \\ applying \: componendo \\ \frac{352}{initial} = \frac{11}{10} \\ initial = \frac{352 \times 10}{11} \\ initial = 32 \times 10 \\ initial \:=320$

Hence, the required number is 320.