Question

9 years Hence a girl will be 3 times as old as she was 9 year ago how old is she now ​

Answer 1

Answer:

x + 9

Step-by-step explanation:

9 years ago she was an age ( x )

she is now 3 times older

9 years before it was x - 9

so balance it out

x + 9 = 3 ( x - 9)

expand

3 x x = 3x

3 x -9 = -27

x+9 = 3x - 27

x-3x = x-2x

-2x = -36

x = 18

Answer 2

$\huge\sf\underline{\underline{\pink{ Answer:-}}}$

The girl's present age is 18 years.

$\Large{\underline{\underline{\bf{QuEsTiOn:-}}}}$

9 years hence, a girl will be 3 times as old as she was 9 years ago. How old is she now?

$\sf\underline{\underline{\green{TO \: FIND \: }}}$

The girl's present age?

$\huge\underline\mathbb{\red S\pink {0} \purple {L} \blue {UT} \orange {1}\green {ON :}}$

Let the girl's present age be x years

Girl's age 9 years ago = x - 9 years

Girl's age 9 years hence = x + 9 years

$\sf\underline{\underline{\green{ACCORDING \: TO \: THE \: QUESTION, \: }}}$

$= > x + 9 = 3 \: ( x - 9)$

$= > x + 9 = 3x - 27$

$= > 3x - x = 9 + 27$

$= > 3x - x = 36$

$= > 2x = 36$

$= > x = \frac{36}{2}$

$= > x = 18$

$\sf\underline{\underline{\green{HENCE, \: }}}$

The girl's present age is 18 years.