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Backpacks and cats

There are 7 girls in a bus

Each girl has 7 backpacks

In each backpack, there are 7 big cats .

For every big cat there are 7 little cats

Question: How many legs are there in the bus?

 

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Answer

10990 legs

My method for solving this was the following:

Girls = 7
BackpacksPerGirl = 7
BigCatsPerBackpack = 7
LittleCatsPerBigCat = 7

TotalBackpacks = Girls x BackpacksPerGirl or 49
BigCats = BigCatsPerBackpack x TotalBackpacks or 343
LittleCats = LittleCatsPerBigCat x BigCats or 2401

GirlsLegs = Girls x 2 legs or 14
plus
BigCatsLegs = BigCats x 4 legs or 1372
plus
LittleCatsLegs = LittleCats x 4 legs or 9604
equals
10990

 


Difficulty
    • Moderate
      		Type
          • Mathematical


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