If one-third of one-fourth of a number is 15, then three-tenth of that number is :  Options
A) 35  B) 36  C) 45  D) 54  E) 30
Let the number be x. Then, 1/3 of 1/4 of x=15   13of14ofx=15   &lt;=&gt; x = 15 * 12= 
<gadget id="calculator">15 * 12</gadget>
<output>180</output>
180.   So, required number=   ((3/10)∗180)=54.   Answer :54
<result>D</result>
If one-third of one-fourth of a number is 15, then three-tenth of that number is :