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A number obtained by increasing 75% of a given two digit number is 8 more than half of another two digit number formed by reversing the digits of the given number. Then sum of the digits of the given number is

a. 13
b. 10
c. 9
d. 11

asked
User Arvis
by
8.1k points

1 Answer

4 votes

Final answer:

The given problem requires solving an equation to find a two-digit number. However, after solving the equation, it is determined that there is no valid solution to the problem.

Step-by-step explanation:

The problem states that a number obtained by increasing 75% of a given two-digit number is 8 more than half of another two-digit number formed by reversing the digits of the given number. Let's solve for the given number using algebraic equations:

  1. Let the given two-digit number be represented as 10x + y, where x is the tens digit and y is the units digit.
  2. According to the problem, 1.75(10x + y) = 0.5(10y + x) + 8.
  3. Simplifying the equation, we get 17x + 7y = 5y + x + 8.
  4. Combining like terms, we have 16x + 2y = 8.
  5. Since the number is a two-digit number, x cannot be 0. Therefore, x must be 1.
  6. Substituting x = 1 into the equation, we get 16(1) + 2y = 8.
  7. Simplifying the equation further, we have 2y = -8.
  8. Dividing both sides by 2, we obtain y = -4.
  9. The sum of the digits of the given number is 1 + (-4) = -3.

Since the sum of digits cannot be negative, we discard this solution.

Therefore, there is no valid answer to this problem.

answered
User AVokin
by
8.3k points

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