1.

the sum of the digits of a two - digit number is 11. When 27 is added to the number, we get a number with digits interchanged. Find the number. ​

Answer»

-step explanation:So, number = 10x + (11 - x) = 9x + 11. Therefore (9x + 11) + 27 = 10 (11 - x) + x ⇔ 9x + 38 = 110 - 9x ⇔ 18x = 72 ⇔ x = 4. Thus, ten's digit = 4 and unit's digit = 7. Hence, REQUIRED number = 47.mark as brainlist



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