document.write( "Question 229914: A pet shop buys a litter of puppies for $160. They sell all but four of the puppies. They make $160 off the puppies they sell, and sell each puppy for $20 more than they bought them for. How many puppies were in the litter that the store bought? \n" ); document.write( "
Algebra.Com's Answer #170395 by edjones(8007)\"\" \"About 
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Since they make 20 for each puppy sold and they made 160 then:
\n" ); document.write( "160/20=8 puppies sold
\n" ); document.write( "8+4=12 puppies in the litter.
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