Julian has 80 Facebook friends. 60% are boys and 40% are girls. Boyd has twice as many friends who are girls and has 100 friends total. What percentage of Boyd’s friends are boys?
Julian's number of friends who are girls is .40*80 = 
<gadget id="calculator">.40*80</gadget>
<output>32</output>
32.
Boyd has twice as many friends as Julian who are girls, a total of 2*32 = 
<gadget id="calculator">2*32</gadget>
<output>64</output>
64.
If Boyd has 100 friends, he has 100-64 = 
<gadget id="calculator">100-64</gadget>
<output>36</output>
36 boys.
The percentage of boys in Boyd's Facebook friends is 36/100*100 = 
<gadget id="calculator">36/100*100</gadget>
<output>36</output>
36.

<result>36</result>