That's not how math works. They wouldn't need to produce 1% more 30 countires would need to produce 1% of world production in addition to their current produce.

That's not how math works. They wouldn't need to produce 1% more 30 countires would need to produce 1% of world production in addition to their current produce. In other words the countries producing the other 70% each would need to 42+% more to make up the missing 30%.