There is no bus driver There are 7 girls in a bus. Each girl has 7 backpacks. In...

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crashri

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...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?
 
girls = 7X2 (# of girls X 2 legs each)
big cats = ((7X7)X7)X4 (7 girls X 7 backpacks X 7 big cats X 4 legs each
little cats = (((7X7)X7)X7)X4 (# of big cats X 7 little cats X 4legs each)

14
+ 1372
+38416
_______
39802
 
10990

14 legs for the girls
there are 343 big cats, each with 4 legs, so 1372 legs
there are 343 * 7 small cats each with 4 legs, that's 9604 legs
 
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