20 percent of 42:

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How to calculate how much will be 20 percent of the 42? The correct answer is:

8.4

The solution is as follows: We make a proportion - 42 is 100 percent. ??? (X - the desired number) is 20 percent What is 20% of 42? Solution: 20 * 42 / 100 = 8.4

Other examples of calculating interest on an amount:

20% of 5 = 1 (remains: 4)	20% of 46 = 9.2 (remains: 36.8)
20% of 142 = 28.4 (remains: 113.6)	20% of 180 = 36 (remains: 144)
46% of 7 = 3.22 (remains: 3.78)	46% of 49 = 22.54 (remains: 26.46)
46% of 84 = 38.64 (remains: 45.36)	46% of 180 = 82.8 (remains: 97.2)
89% of 195 = 173.55 (remains: 21.45)	89% of 347 = 308.83 (remains: 38.17)
89% of 883 = 785.87 (remains: 97.13)	89% of 2091 = 1860.99 (remains: 230.01)

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