Question

The tenth digit of the number of two digits is three times the unit number. If the number is changed them the number received is 36 less than the original number. find that number.

Answer 1

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HERE IS YOUR ANSWER :-

Let the unit number = x
The tenth number = 3x

Original number = 10 (3x) + x × 1
= 30x + 1x
= 31x

Changed number = x × 10 + 1 (3x)
= 10x + 3x
= 13x

13x = 31x - 36
13x - 31x = - 36
-18x = -36
x = -36/-18
x = 2

Original number = 31x
=31 × 2
=62
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