Applications of Ratio and Percent: Mastery Test

Select the correct answer.

If 10% of [tex]x[/tex] is 20, what is 23% of [tex]x[/tex]?

A. 33
B. 46
C. 200
D. 230



Answer :

To solve the problem of finding 23% of [tex]\( x \)[/tex] when 10% of [tex]\( x \)[/tex] is given as 20, follow these steps:

1. Understand the given information:
- We know that 10% of [tex]\( x \)[/tex] is equal to 20. Mathematically, this can be written as:
[tex]\[ 0.10 \cdot x = 20 \][/tex]

2. Find the value of [tex]\( x \)[/tex]:
- To isolate [tex]\( x \)[/tex], divide both sides of the equation by 0.10:
[tex]\[ x = \frac{20}{0.10} = 200 \][/tex]

3. Calculate 23% of [tex]\( x \)[/tex]:
- Now that we know [tex]\( x \)[/tex] is 200, we need to find what 23% of 200 is.
- Mathematically, this can be done by multiplying 200 by 0.23:
[tex]\[ 0.23 \cdot 200 = 46 \][/tex]

So, 23% of [tex]\( x \)[/tex] is [tex]\(\boxed{46}\)[/tex].