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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 - 20 percent = 820% of 40= 20% * 40= 20%/100% * 40= 8
100 & 140. The two numbers are: the mean ± half the range. Half the range is 40/2 = 20. So the two numbers are: 120 - 20 = 100 120 + 20 = 140
Note that 20 exactly divides 40 because 40 / 20 = 2. Then, the GCD of 20 and 40 is 20.
800 $20 bills would make 800. Assuming you mean $800, it takes 40 $20 bills to total $800