Question

in a two digit number the digit in units place is twice the digit in tens place if 27 is added to it digits are reversed find the number​

Answer 1

Answer:4537

Step-by-step explanation:

.

Answer 2

$let \: tens \: digit \: be \: x \\ unit \: digit \: be \: 2x \\ number = 10 + 2x + x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 10 + 3x \\ if \: 27 \: is \: added \: to \: this \\ then \: \\ = \: 10 + 3x + 27 \\ now \: digits \: are \: reversed \\ = 27 + 3x + 10 \\ = 37 + 3x \\ original \: number \\ 10 + 3x = 37 + 3x \\ 10 - 37 = 3x - 3x \\ - 27 = x \\ x = - 27$