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30% off of 42 = 70% of 42 = 42*70/100 = 29.40
70 percent of 60 dollars = 42 dollars.
To find 2.5 percent of a number, multiply the number by 0.025. In this instance, 0.025 x 42 = 1.05. Therefore, 2.5 percent of 42 is equal to 1.05.
42- you figure this out by changing the percent into a decimal and multiplying it. 0.3 x 140=42
0.4 * 105 = 42.