Solve. Round to the nearest hundredth, if necessary.
-82 is 10% of what number?
A)8.2
B)8200
C)82
D)820

Question

Quizplus · Accepted Answer

To solve this problem, we can use the formula:

part/whole = percent/100

We know that the part is 82 and the percent is 10%, which can be written as 0.1. We can plug these values into the formula and solve for the whole:

82/whole = 0.1/100

Cross-multiplying gives us:

82 x 100 = whole x 0.1

Simplifying the right side gives us:

8.2 = whole

Rounding to the nearest hundredth gives us:

whole ≈ 820

Therefore, 82 is 10% of 820, and the best choice is D. Let x be the number.
10% of x is 0.10x.
So, we have the equation 0.10x = 82.
Solving for x, we get:
x = 820.
Therefore, 82 is 10% of 820.

Solve. Round to the Nearest Hundredth, If Necessary