Question

If 45% of X is Y, then Y% of 45 is equal to​

Answer 1

Answer:

$45\% \: of \: x = y \\ \frac{45}{100} \times x = y \\ \frac{9}{20} \times x = y$

$y\% = \frac{9}{20} \times x \times \frac{1}{100} \\ y\% \: of \: 45 = \frac{9}{20 \times 100} \times x \times 45 \\ = { (\frac{9}{20} )}^{2} \times x \\ \frac{81}{400} x$