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**I**f
you've noticed what's special about Factor and Sum tables, you have most
likely solved the problem already.

**I**f
you don't see it yet (or do see it, but are not sure what's next), it's a
good idea to put yourself in the shoes of the second mother, and to try
solve problem as if you were her.

**S**o
you receive the problem and "think for a while" (until you are sure that you've
got all possible factor combinations and get a sum for each of them).

Factor Table |
Sum Table |
||||||||||||||

36 |
= | 1 |
x | 1 |
x | 36 |
1 |
+ | 1 |
+ | 36 |
= | 38 |
||

36 |
= | 1 |
x | 2 |
x | 18 |
1 |
+ | 2 |
+ | 18 |
= | 21 |
||

36 |
= | 1 |
x | 3 |
x | 12 |
1 |
+ | 3 |
+ | 12 |
= | 16 |
||

36 |
= | 1 |
x | 4 |
x | 9 |
1 |
+ | 4 |
+ | 9 |
= | 14 |
||

36 |
= | 1 |
x | 6 |
x | 6 |
1 |
+ | 6 |
+ | 6 |
= | 13 |
||

36 |
= | 2 |
x | 2 |
x | 9 |
2 |
+ | 2 |
+ | 9 |
= | 13 |
||

36 |
= | 2 |
x | 3 |
x | 6 |
2 |
+ | 3 |
+ | 6 |
= | 11 |
||

36 |
= | 3 |
x | 3 |
x | 4 |
3 |
+ | 3 |
+ | 4 |
= | 10 |

**W**ith
Factor and Sum tables derived you are about to give an answer just after...

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