If one-third of one-fourth of a number is 15, then three-tenth of that number is:

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Question: If one-third of one-fourth of a number is 15, then three-tenth of that number is:
[A].

35

[B].

36

[C].

45

[D].

54

Answer: Option D

Explanation:

Let the number be x.

Then, 1 of 1 of x = 15      x = 15 x 3 x 4 = 180.
3 4
So, required number = 3 x 180 = 54.
10

Video Explanation: https://youtu.be/z49OUnzTnwY