Randy has some blocks. He uses 16 blocks to build a tower. If there are 6 blocks left How many blocks did he have at the start?
Randy has some blocks. He uses 16 blocks to build a tower. 

This means that he started with at least 16 blocks. 

If there are 6 blocks left, that means that he used 10 blocks to build the tower. 

This means that he started with at least 26 blocks.