SOLUTION: the tens digit of two-digit number is one more than the units' digit. If the number is divided by the sum of the digits, the quotient is equal to seven. What are the numbers?

Question 659204: the tens digit of two-digit number is one more than the units' digit. If the number is divided by the sum of the digits, the quotient is equal to seven. What are the numbers?
Answer by colliefan(242) (Show Source): You can put this solution on YOUR website!
For this one, you just need to make a list of the possibilities described and then test to see which meets the rest of the specifications in the problem.
There are only a few 2 digit numbers where the tens is one more than the unit's digit.
10
21
32
43
54
65
76
87
98
No, we'll add the sum of the digits in another column.

10 1
21 3
32 5
43 7
54 8
65 9
76 13
87 15
98 17
You probably didn't need to complete the list before seeing the answer. You might even have suspected it after looking at the first list because it is the only number in the list evenly divisible by 7.
21/3=7

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