3050.
Halfway between them is 3150.
% increase = 100*(3100/3000 - 1) = 3.33..%
3500
2,500 is halfway between 2000 and 3000
3000 + 100 = 3100
3000
3100 3200 3300 3400 3500 3600 3700 3800 3900
3000 and not 2900
550/3000 = .18333... if we were to try to make this into a simpler kind of fraction, we could say that it is about halfway between a fifth and a sixth.
Well, darling, the number halfway between 1000 and 5000 is 3000. It's not rocket science, just basic math. So, there you have it, 3000 is the magic number you're looking for.
The number that is in between 2000 and 3000 is 2500. This number falls exactly halfway between the two given numbers on the number line. It can be calculated by finding the average of the two endpoints: (2000 + 3000) / 2 = 2500.