Question

A two digit no is such that the tens digit wxceeds twice the units digit by 2 and the no obtained by interchange the digits is 5more than 3times the sum of the digits

Answer 1

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Answer 2

let the unit digit be x and tens digit be y

the A/C to ques y = 2x + 2  ....... - (1)

and also xy = 5 + 3(x+y) ....... (2)

now putting value of x in equation (2)

(2x+2)x = 5 +3(x +2x + 2)

$2x^{2}  - 7x - 11$$[/tex]</p><p>[tex]2x^{2} -9x +2x - 9 = 0\\\\x(2x-9) + 1 (2x-9) = 0 \\x = 1 or 9/2$

the no. is 29