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8 = .40(x)

8(10/4) = .40x(10/4)

80/4 = x

20 = x

x is 20, but you REALLY should start doing your homework and paying attention in class. Learning is important.

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Q: 8 is 40 percent of x Solve for x?
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What is the percent of 8 out of 40?

8/40 x 100 = 20 percent.


Percent of a number?

the percent of a number is when you multiply the percentage by the number, for example: 8% of 40 40 x 0.08= 20% or 20% of 40 0.20 x 40=8%


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What is twenty percent of forty?

40 x .20 = 8 So 8 is your answer.


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5 x 8 = 40


0.4 is 8 percent of what number?

To find the number that 0.4 is 8 percent of, you can set up a proportion. Let x represent the unknown number. The proportion can be written as 0.4/x = 8/100. Cross multiply to solve for x, which gives you 0.4 * 100 = 8x. Simplifying further, you get 40 = 8x. Dividing both sides by 8 gives you x = 5. Therefore, 0.4 is 8 percent of 5.


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75 percent is equal to 0.75, so the expression would look like (0.75x) +8. But if you do not know what it equals to it is not an equation and you can not solve it.


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First, 10% = 8 so 10% x 4 = 40% which is 8 x 4=40% 8 x 4 = 32. So now u know that 40% of 80 is 32.