Best Answer

Since the quiz/test (or whatever it may be) is out of '40' we know that 40 out of 40 is 100%, or the full marks.

Now, since we know that, we can divide 28 by 40.

28/40 = 0.7

After, we take this number and multiply it by 100 to make it equal to the percentage..

0.7 x 100 = 70

So, 28 out of 40 is equal to 70%

Q: What is the percent of 28 out of 40?

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When 40 is decreased by 30% the result is 28.

40

30% off of 40 dollars = 70% [left] of 40 dollars = 40*70/100 = 28 dollars

28

Let that number be x. So we have, x - 0.3x = 28 0.7x = 28 7x = 280 x = 40 Check.

Related questions

28% of 40= 28% * 40= 0.28 * 40= 11.2

28/0.7 = 40 Therefore, 28 is 70 percent of 40.

40 percent of 70 is 28.Therefore 40% of 70 dollars equals 28 dollars.

100*28/40 = 70%

It is: 28/40 times 100 = 70%

To find 40 percent of a number, multiply the number by 0.4. In this instance, 0.4 x 70 = 28. Therefore, 40 percent of 70 is equal to 28.

40% of 70= 40% * 70= 0.4 * 70= 28

40%

40% of 28 can be written as (40/100) x 28 or 0.4 x 28. Therefore your answer is 11.2.

70. [ = 28*100/40]

70%

28