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A quick tutorial on how to calculate, add, subtract and use percentages on the TI30X IIS scientific calculator to determine percent, taxes, interest discounts and more.

Contents:
0:00 Intro
0:17 Buttons used
0:32 Finding X% of a number
1:00 What % of X is Y?
1:35 Adding % (Taxes)
2:22 Subtracting % (Discounts)
3:06 Outro