Answer:
Ans. c) Income tax rate must be 23%
Explanation:
Hi, the total income of Thailand´s workforce is:
[tex]Total Income=35,709,487 people*\frac{8,630}{person} = 308,172,872,810[/tex]
Since Thailand´s government needs to raise $70,000,000,000, the tax rate has to be:
[tex]TaxRate=\frac{70,000,000,000}{308,172,872,810} =0.23[/tex]
So Thailand´s tax rate must be: c. 23%
Best of luck.