the number of photos taken is a two-digit number. the sum of the number is 11. The tens digit is 3 more than the ones digit. How many photos were taken

3 answers

Numbers that add up to 11:

29, 38, 47, 56, 65, 74, 83, 92
tens digit + ones digit = 11

tens digit = 3 + ones digit

t + x = 11
t = 3 + x

substitute: 3 + x + x =11

3 + 2x = 11

Solve for x which represents the one's digit. Then find the tens digit.
47