Answer: 86 billion blocks
Step-by-step explanation:
Here, the total population is 2 billion,
Since, the blocks a person owe = 43
Thus,
[tex]\text{ the blocks 2 billion people owe}= \text{ the block a person owe}\times \text{the total population}[/tex]
= [tex]43 \times 2[/tex]
= [tex]86\text{ bilion}[/tex]
Therefore, total blocks that sold their introduction = 86 billion.