CBSE Class 9 Answered
Sum of the digits of a two digit number is
14. If we add 18 to the original number, the digits interchange their places.
Write two equations for these two statements.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Let the unit's digit of the number be x and ten's digit be y.
x + y = 14 ……….(i)
Original number = 10y + x
Number obtained on reversing the digits = 10x + y
According to question,
10y + x + 18 = 10x+ y
9x - 9y = 18
x - y = 2 ………..(ii)
Answered by | 04 Jun, 2014, 03:23: PM
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