The difference between a number and its two-fifth is 510. What is 15% of that number?
Choose one.
A) 152.01 B) 85 C) 76 D) 168.2 E) 127.5
Let the number be x. Then,   x - 2/5 x = 510   x = (510 * 5)/3= 
<gadget id="calculator">(510 * 5)/3</gadget>
<output>850</output>
850   15% of 850= 127.5.   Answer:127.5
<result>E</result>
The difference between a number and its two-fifth is 510. What is 15% of that number?