Question

A number consists of two digits whose sum is 9 . if 27 is subtracted from the number, it's digits are reversed. Find the number.
​

Answer 1

Answer:

it is both answer of 9 and 27 is like us both answer is 3

Answer 2

Answer:

$\bf given \: that$

$\bf let \: once \: place \: digit \: of \: a \:$

$\bf number \: be \: x$

$\bf ⇒sum \: of \: 2 \: digit \: = 9$

$\bf ⇒tens \: place \: of \: a \:$

$\bf number \: = 9 - x$

$\bf ⇒10(9 - x)x = 90 - 10x - x$$\bf ⇒10(9 - x)x = 90 - 9x$

$\bf 27 \: is \: subtracted \: from \: the \:$

$\bf ⇒number \: we \: get \: the \:$

$\bf digit \: are \: reversed$

$\bf ⇒90 - 9x - 27 = 10(x) + 9 - x$

$\bf ⇒90 - 9x - 27 = 10 + 9 - x$

$\bf ⇒- 9x + 63 = 9x + 9$

$\bf ⇒63 - 9 = 9x + 9x$

$\bf ⇒54 = 18x$

$\bf ⇒\frac{54}{18} = x$

$\bf ⇒x = 3$

$\therefore therefore$

$\bf ⇨once \: place \: = 3$

$\bf ⇨tens \: place \: = 9 - 3$

$\bf ⇨tens \: place \: = 6$

Step-by-step explanation:

HOPE IT HELPS YOU FRIEND☺