I can see the lessons are closely getting into your head. First and foremost 15% of 1M is 150k.
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One bale of 2kg maize flour which is among the most expensive ones is 1840, 1% of that bale is 18 shillings only, most family in Kenya are 4-6 at most, meaning that bale watamaliza nayo almost 3-4 months with it.
In real sense they will only get a tax of 3*18=54 on the lower side or 4*18=72 on the higher side per year.
Sasa ebu niambie, What's 54 or 72 shillings per year compared with 150k per year? After 15yrs interest earned will 2.25M but only 810 will be the 1% on Unga after those 15yrs.
You are an idiot.