Skyler has 100 hats on his hand with the colors red, blue, and white. Half of the hats are red, 3/5 of the remaining hats are blue, and the rest are white. How many white hats does Skyler have?
If half of the hats are red, there are 1/2*100= 
<gadget id="calculator">1/2*100</gadget>
<output>50</output>
50 red hats.
The remaining number of hats which are not red is 100-50 = 
<gadget id="calculator">100-50</gadget>
<output>50</output>
50
3/5 of the remaining hats are blue, a total of 3/5*50 = 
<gadget id="calculator">3/5*50</gadget>
<output>30</output>
30 hats.
If the rest of the remaining hats are white, then there are 50-30 = 
<gadget id="calculator">50-30</gadget>
<output>20</output>
20 white hats.

<result>20</result>