Question

HELP ASAP

1. 45% of what number is 63
2. 95% of what number is 57
3. 85% of what number is 102

Answer 1

`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`

Explanation:

`\\ 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 \: = ( (45)/(100) )x = 63 \\ (45x)/(100) = 63 \\ 45x = 6300 \\ x = (6300)/(45) \\ \underline{ \boxed{x = 140}} \\ \\2.... \to \: 95 \% \: of \: y\: = ( (95)/(100) )y = 57 \\ (95y)/(100) = 57 \\ 95 y= 5700 \\ y = (5700)/(95) \\ \underline{ \boxed{y = 60}} \\ \\3.... \to \: 85 \% \: of \: z\: = ( (85)/(100) )z = 102 \\ (85z)/(100) = 102 \\ 85 z= 10200 \\ z = (10200)/(85) \\ \underline{ \boxed{ z= 120}}`

♨Rage♨

Answer 2

Explanation:

1. 0.45×63=28.35

2. 0.95×57=54.15

3. 0.85×102=86.7