Answer:
[tex]1. \to \: 45 \% \: of \: \underline { \boxed{140}}\: is \: 63 \\2.\to \: 95 \% \: of \: \underline{ \boxed{60}}\: is \: 57 \\3. \to \:85 \% \: of \: \underline{ \boxed{120}} \: is \: 102[/tex]
Step-by-step explanation:
[tex] \\ let \: the \: numers \: be \: x : y \: and :z \\ 1. \to \: 45 \% \: of \: x \: number \: is \: 63 \\2.\to \: 95 \% \: of \: y \: number \: is \: 57 \\3. \to \:85 \% \: of \: z \: number \: is \: 102 \\ \\1.... \to \:45 \% \: of \: x \: = ( \frac{45}{100} )x = 63 \\ \frac{45x}{100} = 63 \\ 45x = 6300 \\ x = \frac{6300}{45} \\ \underline{ \boxed{x = 140}} \\ \\2.... \to \: 95 \% \: of \: y\: = ( \frac{95}{100} )y = 57 \\ \frac{95y}{100} = 57 \\ 95 y= 5700 \\ y = \frac{5700}{95} \\ \underline{ \boxed{y = 60}} \\ \\3.... \to \: 85 \% \: of \: z\: = ( \frac{85}{100} )z = 102 \\ \frac{85z}{100} = 102 \\ 85 z= 10200 \\ z = \frac{10200}{85} \\ \underline{ \boxed{ z= 120}} [/tex]
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