If 15% of 30% of 50% of a number is 90, then what is the number?	Pick
A) 4000	B) 3050	C) 4400	D) 4500	E) None of these
Let the number be a   Given, 15/100 * 30/100 * 50/100 * a = 90   =&gt; 3/20 * 3/10 * 1/2 * a = 90   =&gt; a = 10 * 20 * 10 * 2= 
<gadget id="calculator">10 * 20 * 10 * 2</gadget>
<output>4_000</output>
4000.   4000NSWER:4000
<result>A</result>
If 15% of 30% of 50% of a number is 90, then what is the number?