Question

Division with a 2 digit number the sum is 7. If the number with the order of the digits reversed is 28 greater than twice the units digit of the original number

Answer 1

Answer:

43

Step-by-step explanation:

Let x and y be the two digits. The number is 10x + y

x + y = 7  =========> 1

10y+x = 28 + 2y

=> x+8y = 28  =============> 2

subtract 1 from 2.

x + 8y = 28

x + y = 7

-   -     -

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7y = 21 => y = 3.

Now x+y = 7

=> x = 4.

Thus the number is 43.