the sum of the 2digit no. and the no. obtained be the reversing the order of ts digit is 99.if the digit differ by 3.find the no.?

Question

Ariana · Answer

Answer:   36   Step-by-step explanation:   Let the 2 digits be x,y. respectively   2 digit number =10x+y   2 digit number obtained by ususing the digit =10y+x   ∴10x+y+10y+x=99   ⇒11x+11y=99   ⇒x+y=9   x−y=3   On adding : 2x=12                        x=6   putting x in ⟶(i)   6+y=9   y=3   ∴ Number =10x+y=63   or , 10y+x=36.

Margaret · Answer

Step-by-step explanation:   Let the 2 digits be x,y. respectively   2 digit number =10x+y   2 digit number obtained by ususing the digit =10y+x   ∴10x+y+10y+x=99   ⇒11x+11y=99   ⇒x+y=9   x−y=3   On adding : 2x=12                        x=6   putting x in ⟶(i)   6+y=9   y=3   ∴ Number =10x+y=63   or , 10y+x=36.

Arianna

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