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The digits of a two-digit number differ by 3. If the digits are interchanged and the resulting number is added to the original number, we get 143. What can be the original number? |
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Answer» -STEP explanation:Let the two digit number be xy. The digit of a two digit number differ by 3. HENCE, x - y = 3 ...(i) The digit are interchanged and the resulting number is added to the original number we get 143. 10x + y + 10y + x = 143 11X + 11y = 143 x + y = 13 ...(ii) Solving (i) and (ii) we get x = 8 and y = 5 Hence, the original number is 85. |
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