The sum of the digits of a two – digit number is 20% of the difference between the number and the number obtained by interchanging the positions of the digits. What is definitely the difference between the digits of that number?

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None of these

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Solution

The correct option is E
None of these

Let the ten's digit be x and unit's digit be y.

Then, x + y = $\frac{1}{5}$ [(10x + y) - (10y + x)]

$⟹$ 4x = 14y

Thus, the value of x-y cannot be determined from the given data.

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The sum of the digits of a two – digit number is 20% of the difference between the number and the number obtained by interchanging the positions of the digits. What is definitely the difference between the digits of that number?

The correct option is E None of these Let the ten's digit be x and unit's digit be y. Then, x + y = 15[(10x + y) - (10y + x)] ⟹4x = 14y Thus, the value of x-y cannot be determined from the given data.

The correct option is E
None of these

Let the ten's digit be x and unit's digit be y.

Then, x + y = $\frac{1}{5}$ [(10x + y) - (10y + x)]

$⟹$ 4x = 14y

Thus, the value of x-y cannot be determined from the given data.