86 is 45% of what number?
A: 86=0.45n
B: n=0.45 x 86
C: 0.45= n x 86
D: 86=45n
what number?: n
45% of what number?: .45n
86 is 45% of what number?: 86 = .45n
so, A, right?
To find the number that 86 is 45% of, we can set up an equation where "n" represents the unknown number.
The equation would be: 86 = 0.45n.
Looking at the answer choices:
A: 86 = 0.45n --> This matches the equation we set up, so this could be the correct answer.
B: n = 0.45 x 86 --> This is the incorrect rearrangement of the equation.
C: 0.45 = n x 86 --> This is the incorrect rearrangement of the equation.
D: 86 = 45n --> This is the incorrect equation.
Therefore, the correct answer is A: 86 = 0.45n.