Question

in a 2 digit number the digit at the units place is twice the tens place. If 27 is added to it, the digits are reversed , find the no.​

Answer 1

Answer:

36

In a two digit number digit in units place is twice the digit in the tens place. If 27 is added to its digits are reversed. Hence, the number required number is 36.

Answer 2

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in a 2 digit number the digit at the units place is twice the tens place. If 27 is added to it, the digits are reversed , find the no.

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꧁Given that ꧂

• Its a 2 digit number.

✔︎Let one digit be X and other y.✔︎

So number is 10x+y.

When reversed it is 10y+x

To Subtracting the original number from reversed we have 9(y-x) which is 27.

So, se have

y-x is 3 (divide it both sides by 9).

Now y is units digit.

So y will be 2x

Substituting y with 2x in above equation we have X= 3

So y is 2x or 6.

So the number becomes 36.

☘︎The required number is 36☘︎