Paddy's Confidential has 600 cans of stew required to feed 40 people. How many cans would be needed to feed 30% fewer people?
If there are 40 people, each person gets 600/40 = 
<gadget id="calculator">600/40</gadget>
<output>15</output>
15 cans.
Thirty percent of the total number of people present is 30/100*40 = 
<gadget id="calculator">30/100*40</gadget>
<output>12</output>
12.
If there are 30% fewer people, the number of people who are to be fed is 40-12 = 
<gadget id="calculator">40-12</gadget>
<output>28</output>
28.
Since each person is given 15 cans, twenty-eight people will need 15*28 = 
<gadget id="calculator">15*28</gadget>
<output>420</output>
420 cans.

<result>420</result>