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If x% of a is the same as y% of b, then z% of b will be1). \(\frac{{{\rm{yz}}}}{{\rm{x}}}{\rm{\% \;of\;a}}\)2). \(\frac{{zx}}{y}{\rm{\% \;of\;a}}\)3). \(\frac{{xy}}{z}{\rm{\% \;of\;a}}\)4). \(\frac{y}{z}{\rm{\% \;of\;a}}\) |
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Answer» $(\frac{x}{{100}} \times a = \frac{y}{{100}} \times B)$ ⇒ ax = by $(\Rightarrow b = \frac{{ax}}{y})$ HENCE, Z% of b = $(\frac{z}{{100}} \times b = \frac{z}{{100}} \times \frac{{ax}}{y} = \frac{{XZ}}{y}\% \;of\;a)$ |
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