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the increase is 50%
percent increase = 50% % increase =|original value - new value|/original value * 100% = |20 - 30|/20 * 100% = 10/20 * 100% = 0.50* 100% = 50%
20 to 30 is a 50% increase.
A reduction of 20 percentage points.
what is the answer of 30 percent of 50