I should point out that your math score (or your verbal score) is not based on how many questions you answer correctly; it's based on the level of difficulty of the questions you answer correctly.

As part of an experiment, I took GMATPrep Practice Test #1 four times, and each time I answered every second question correctly (I did this for the quant section only)

Given that I correctly answered exactly half of the questions each time, you'd expect my quant scores to be roughly the same for all 4 tests.

My 4 scaled scores were: 19, 23, 26 and 42

This represents a percentile range from approximately 8th percentile to the 63rd percentile.

So, it's hard to tell much from those numbers you provided. What really matters are the scores. But, even then, we're comparing a Kaplan test with a GMATPrep test.

Aside: If you're interested, we have a free video explaining the GMAT scoring algorithm: https://www.gmatprepnow.com/module/gener ... es?id=1251

Cheers,
Brent