If 40% of x is 4, what is x?
A. 40
B. 10
C. 4
D. None of these
40 / 4 = x / 1
4x = 40
4x / 4 = 40 / 4
x= 10 ; B
Right
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To solve this problem, we need to set up the equation using the information given. We know that 40% of x is equal to 4.
The equation can be set up as follows:
(40/100) * x = 4
To solve for x, we can simplify the equation by multiplying both sides by 100/40 to cancel out the fraction:
(100/40) * (40/100) * x = (100/40) * 4
x = 10
Therefore, the value of x is 10, so the correct answer is option B.