Question

2. The sum of the digits of a two digit number is 12. If the new number formed by reversing the
digits is greater than the original number by 54, find the original number.
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Answer 1

Answer:

6 is the answer ok na this is correct answer

Answer 2

Answer:

The original number = 39

Step-by-step explanation:

The more easiest and less time consuming method to solve this question is by guessing the numbers.

If you guess which double-digit numbers whose digits add upto 12, you'll see that there are only 7 numbers that satisfy the condition. Those numbers are: 39, 48, 57, 66, 75, 84, 93.

Now all you have to do is add 54 to either 39, 48, or 57.

(You can't choose the other numbers because then the condition is saying that it shouldn't be lesser than the original number.)

When you add 54 to 39, you get 93, which is nothing but the reversed digits of the original number.

And voila! you got the answer in a faster method!

Hope this answer helped you!

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