Hi guys, I was wondering if you could help me do a quick sum to figure out the ratio of very smart African people. I am not black, just want to see how many of them have high intellect out there.

The most populous Sub-Saharan African country is Nigeria. In Nigeria, the average IQ is 70. That compares with the British average of 100.

I raise then two questions -

1 - Consider an IQ of 125 or above to be "very smart". What percent of the Nigerian and British populations are "very smart" in this case?

2. If you are born as a Briton, how many times more likely are you to be very smart over a Nigerian?