CBSE Class 8 Answered
A number consists of 2 digits whose sum is 9.If 27 is subtracted from the number it's digits are reversed. Find th number
Asked by gopi.pappu9 | 15 Sep, 2020, 07:51: PM
Expert Answer
Let the digit at the ten's place be x → the digit at the unit's place be 9 - x.
Two digit number = 10x + 9 - x = 9x + 9
Accordind to the condition,
9x + 9 - 27 = 10(9 - x) + x
→ 9x - 18 = 90 - 9x
→ 18x = 108
→ x = 6
Therefore, the two digit number = 9(6) + 9 = 54 + 9 = 63
Answered by Yasmeen Khan | 17 Sep, 2020, 02:53: PM
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