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Q: The mean of 20 and 40?

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20

I guess you mean: What number when you subtract 20, gives 40 as the answer?x - 20 = 40.Add 20 to both sides: x - 20 + 20 = 40 + 20x = 60

40

40 - 20 percent = 820% of 40= 20% * 40= 20%/100% * 40= 8

20% of 40 is not greater than 40% of 20. The two are equal. 20% of 40 = 0.20 * 40 = 8 40% of 20 = 0.40 * 20 = 8

40 of 20 = 40 x 20 = 800 40% of 20 = 0.4 x 20 = 8

It means 20 minutes to the hour of 7, that is 6:40

"Of" means to multiply. For example, what is 40% of 20? 20*0.4 =8

27.33333333

20

20 + 20 = 40 is not 40 when either one of the two terms is a negative or both. -20 + 20 = 0 and -20 + -20 = -40

If you mean factors, they are 1, 2, 4, 5, 8, 10, 20, 40

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