How did you arrive at the 24998.8? The example you gave doesn't give enough
information to solve the problem.
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Regards,

PJ
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"Cobus" wrote:

How do I calculate an answer with different % intervals from one amount:
Example : the amount = 70 000
The intervals 0 - 39999 = 30%
then from 40000 - 59999 = 40%
then from 60000 - 70000 = 50%
the answer will then be 24998.8