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The difference between a number and one-third of that number is 228. What is 20% of that number?

A72.5

B68.4

C58.9

D61.8

Answer:

B. 68.4

Read Explanation:

Solution:

Given:

The difference between a number and one-third of that number is 228.

Calculation:

Let number be x 

According to Question,

x13x=228x-\frac{1}{3}x=228

2x3=228\frac{2x}{3} = 228

x=228×32=342x = 228\times{\frac{3}{2}} = 342

 

 20% of the number = (20100)×342=68.4(\frac{20}{100})\times{342} = 68.4

 

∴ 20% of the number is 68.4.


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