PDA

View Full Version : Math


annacheergrl
Mar 18, 2008, 05:21 PM
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?

ChaliceHolder
Mar 18, 2008, 06:04 PM
2(7) + 7(7)(4) + 49(7)(4)
14 + 196 + 1372 = 1582
But to be technical, there are 14 legs and 1568 paws.
:)

annacheergrl
Mar 18, 2008, 06:44 PM
Yeah
I tried that and it's wrong. It's driving me bananas!

ISneezeFunny
Mar 18, 2008, 06:53 PM
... you count the driver of this bus?

giani513
Mar 18, 2008, 09:45 PM
10990 not including bus driver's legs. See
"Legs and girls and buses read" post.

msk
Mar 18, 2008, 11:41 PM
To explain it I would like to make a chart

Girls 1 2 3 4 5 6 7

B.Pack 7 7 7 7 7 7 7

Big cats 7x7 7x7 7x7 7x7 7x7 7x7 7x7

Total Big cats for seven girls= (7x7)x7=343 ---------A
Each big cat has 7 small cats so total small cats=343x7=2401----------B
Total cats =A+B=343+2401=2744
Total legs for cats = 2744x4=10976
Total legs for girls=7x2=14
Therefore total legs for girls and cats=10976+14=10990 (except bus driver)
I think giani513 answer is correct