Question

For a given two-digit positive integer, the tens digit is 3 more than the units digit. The sum of the digits is 11. What is the integer

Answer 1

Step-by-step explanation:

Let the unit digit be a and tens digit be b. Then,

Sum of digit = a+b = 11 , b = 11-a

A/C,

By substituting the value of b in this equation -

● b = 3+a

11-a = 3+a

11-3 = a+a

8 = 2a

8/2 = a

4 = a

By substituting the value of a in this equation -

● b = 11-a

b = 11 - 4

b = 7

Original no = 10×7 + 4

= 74