Are you sure you don't mean their PRODUCT is less than 100?? Otherwise I don't think this is solvable, because there are many solutions...

Interesting - I'm not sure the problem is correctly posed, since it is obvious given only the sum of the two numbers that you would not be able to derive...

The German keeps fishes. Construct a 5 by 5 grid and note that each item is mentioned once except for smokes (2 x dunhill and 2 x Blends) and pets...

If you only need a high current for a short period (e.g. motor start current) you can use a super capacitor charging/discharging circuit. Nickel Metal Hydride batteries can supply very...