Originally Posted by UAL T38 Phlyer

The answer should be:

1.1026 to the 42 power (need exponential calculator). (that is 110.26% expressed numerically).

Take that, and multiply by 26.7 Billion.

This should be the total units per year, 42 years after.

Multiply by 0.20; this is your 20% for Mystery Country X.

However, I get 323 Billion, and that is not one of your answers.

I tried again using 41 and 43 years in the exponent, but those answers are
293 Billion (using 41 years)
356 Billion (using 43 years)

Hope it helps a little...sorry no direct match, but the math principles above are correct.