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4. The difference of the digits of a 2 digit number is 3. If the digits areinterchanged and the new number is added to the original number, theresult is 77. Find the original number. |
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Answer» let the digits be x and y. x - y = 3; x = y + 3(10x + y) + (10y + x) = 7711x + 11y = 77x + y = 7y + 3 + y = 72y = 4y = 2x = 2 + 3 = 5original no. is 52 52 is is original number 52 is original number 52 the correct answer of the given question 52 is original number |
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