I only finished 60% and was already got headach. Comparing to 1990s, the IQ test in iphone, no sure it came with iphone games or someone downloaded, it was at least 3x easier than that 1990s. I could finish 2 set without any problem. Remember 15 years is between the two tests I took. So I guess your 140 is similar to the one I took in 1990s.