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The sum of the digit of a two digit number is 15 and if 19 is added to the number the digits are interchanged. find the number. |
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Answer» Step-by-step explanation: let the one's digit be x and the tens digit = (15 - x ) original number = 10 (15 - x )+ x 150 - 10 x +x 150 - 9x
On INTERCHANGING = 10X + (15-x) 10x + 15- x 9x + 15 A/Q original number + 19 = interchanged number 150 - 9x + 19 = 9x + 15 150 + 19 - 15 = 9x + 9x 154 = 18 x x = 8 now 10 th place = 15 - 8 = 7 therefore digit is 78 HOPE IT HELPS YOU!
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