Question

A number consists of two digits whose sum is 15. If 27 is added to the original number its digits are interchanged.Find the number.

Answer 1

Answer:

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and thanks

Step-by-step explanation:

take the number added  to 27 be x

= 27 + x = 15

27 goes to other side and becomes minus

= x = 15 - 27 = -12

the answer is - 12

hope it helps

Answer 2

Step-by-step explanation:

Let the unit digit be= x

so the tens digit is= 15-x

Original no:- 10(15-x)+x = 150-9x

After interchange

10(x)+15-x =9x+15

According to Question:-

=> 150-9x+27= 9x+15

=> -18x = -162

=> x= 9

So the original number

=> 150+9×9

=> 69 (ans)....