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28 is 112 percent of what?
Set up your equation 28/x = 112/100 (that's 28 divided by x = 112 divided by 100). Then you can cross-multiply (giving you 2800 = 112x) and solve for x (which in this case is 25).
If some even number is divided by the number preceding even number the quotient is1.1 what is the number?
Let the first even number = 2x. Then the preceding even number is 2x-2.(2x)/(2x-2) = 1.12x = 2.2x - 2.22x + 2.2 = 2.2x2.2 = 0.2x1.1 = 0.1 xx = 112x = 22The first even number is 22.The preceding even number is 20.22/20 = 1.1 yay!Since the question has some potential ambiguity in the wording, I offer an alternate interpretation to show why the answer above must be the correct interpretation. Perhaps it mean an even number is divided by the number preceding it.For example, if the number is 20, the one preceding it is 19 and of course not even.In this case the problem is (2x)/(2x-1) =1.12x=(2x-1)(1.1)2x=2.2x -1.1-.2x=-1.1x=1.1/.2or 11/2but then 2x =11 and this is not even so this interpretation does not work.So the first answer is the only interpretation that gives a valid answer.If fact I did not even need to do the algebra. An even number divided by an even number results in an odd number and an even number divided by an odd number results in a an even number. This would be used immediately to see which interpretation is correct. It only requires a little multiplication of the number by 10's so see that.
