If 40% of a certain number is 160, then what is 90% of that number?	Choose the correct choice from the following answers.
A) 270
B) 380
C) 260
D) 360
E) 290
Explanation:   40% = 40*4= 
<gadget id="calculator">40*4</gadget>
<output>160</output>
160   90%= 90*4= 
<gadget id="calculator">90*4</gadget>
<output>360</output>
360   Answer: Option 360
<result>D</result>
If 40% of a certain number is 160, then what is 90% of that number?