• anonymous
Annie loves giving away puppies. When her friend Bobby walks by, she instantly gives him 50% of her puppy stash. Bobby, stunned with this shower of puppies, gives back 20% of his total. Annie counters by giving Bobby 50% of her new puppy total. Bobby responds by giving Annie back 50% of the puppies he now has and then running off, having gone from 0 to 7 puppies in just a few seconds! How many puppies did Annie begin with?
  • Stacey Warren - Expert
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  • katieb
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  • aric200
Annie has 100% she then gives away 50% -20% He gave back = 30% He still has She gives 50 % Again 50%+30% = He now has 80% He gives back 50%= 30% Again He has 7 puppies at 30% Annies Puppies = 70% Total puppies = 100% I believe that is right up to there just solve 10

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