It all depends on the strength of the cement, and cement with a strength of 32.0 and above will produce more blocks. based on our research.
1 bag of a good cement can lay approximately 70 to 80 blocks
Other cement below the strength of 32.0 will lay between 45 and 50 blocks, that is, not compromising the standard.
Make sure you lay your cement blocks in the premises of your building to avoid transportation cost.
Also avoid paying for labor per block, negotiate to pay for his services per day.