Pauline has 125 matchbox cars. They are all either convertibles, trucks, regular cars. 64% of them are regular cars. 8% are trucks. How many convertibles does she own?
The trucks and regular cars make up 72% of her collection because 64+8 equals 
<gadget id="calculator">64+8</gadget>
<output>72</output>
72.
This means convertibles make up 28% of her collection because 100-72 equals 28.
She has 35 convertibles because 125 times .28 equals 
<gadget id="calculator">125*.28</gadget>
<output>35</output>
35.

<result>35</result>