Last week, you might have seen that Exponent, Inc. (NASDAQ:EXPO) released its quarterly result to the market. The early response was not positive, with shares down 5.4% to US$68.33 in the past week.

The viral math problem has X users stumped - but the answer comes from lessons learned in fifth or sixth grade. The best way ...

In grade school, you were constantly drilled on mathematics. But as an adult, those lessons all too often fall to the wayside. See if you can remember elementary formulas with this math problem.