The number 20 is 40 percent of which of the following?

Question

A) 200% of 10
B) 5% of 600
C) 40% of 100
D) 25% of 200
E) 300% of 20

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Whoisdmx15 · Answer

This is fairly straight forward:
20 is 40 percent of which of the following
Finding out 20 is 40% of x

.4*x=20
x= 50

Checking the options for 50
25% of 200 = 50
 IMO Ans D

e3thekid · Answer

We can set this question up as:

20 = 40%(x) -> let’s simplify 40/100 down to 2/5

20 = 2x/5 
100 = 2x 
50 = x

Checking all the answer choices, we see that 25% of 200 matches.

25% of 200 = 1/4(200) = 50

IMO Option D

Rahul1233 · Answer

40 % of x = 20 => 40/100 of x = 20 . so , x = 50 (100 * 20 / 40)

Checking with options , answer is D . (25% of 200 = 50)

satavishamitra · Answer

20 =  \frac{40}{100}  of X
X=  \frac{20*100}{40} 
  X= 50

Now, a trick to go through each option and yet not calculate everything:

Look for ways to get a 50 by multiplication
It can be  1 *50 , 10 * 5   or   25 * 2

Going through each option:
 A) 200% of 10 : Answer is 2... (starting with 2)  Eliminate  
 B) 5% of 600 : Answer is 3...  Eliminate   
 C) 40% of 100 : Answer is 4...  Eliminate   
 D) 25% of 200 : Answer is 5... Maybe 
 E) 300% of 20 : Answer is 6...  Eliminate

So, only one option is starting with 5 and hence, we don't need to calculate any further.
D is our answer

bhargavhhhhhhhh · Answer

Given: 
- The number 20 is 40 percent of a number, and we need to find that number.

Step 1: Express the problem as an equation.
- 20 is 40% of some number. We can write this as:
 20 = 0.40 * X, where X is the unknown number.

Step 2: Solve for X.
- Divide both sides of the equation by 0.40:
 X = 20 / 0.40 = 50.

Step 3: Check each option.

(A) 200% of 10 = 2 * 10 = 20. 
- This is not the correct answer.

(B) 5% of 600 = 0.05 * 600 = 30. 
- This is not the correct answer.

(C) 40% of 100 = 0.40 * 100 = 40. 
- This is not the correct answer.

(D) 25% of 200 = 0.25 * 200 = 50. 
- This is the correct answer.

(E) 300% of 20 = 3 * 20 = 60. 
- This is not the correct answer.

Answer: D. 25% of 200

The number 20 is 40 percent of which of the following?

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The number 20 is 40 percent of which of the following?

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