These digits yield a sum of 15
9, 6
8, 7
Which pair fits the definition?
The sum of the digits of a two-digit is 15. The tens digit is one more than the units digit. What is the number?
2 answers
Just think of all the pairs that add up to 15:
96
87
78
69
Now which one fits the criteria of your problem?
96
87
78
69
Now which one fits the criteria of your problem?