### Brain Teasers

# Legs & Legs & Legs !!!

Lester saw a number of men, dogs and spiders in a group. When he counted the number of legs of all of them in the group he found them to be 420. He knows that the number of dogs in the group are double the number of men and the number of spiders are double the number of dogs.

Can you help him find the number of men, dogs and spiders in the group?

Can you help him find the number of men, dogs and spiders in the group?

### Hint

Men have 2 legs,Dogs have 4 legs and

Spiders have 8 legs.

### Answer

Lester found that there were 10 men, 20 dogs and 40 spiders in the group.If you consider the group to consist of 1 man, 2 dogs and 4 spiders, the number of legs will be 42 (This is the least value possible with the given ratio). Since 420 is ten times 42, you must multiply this ratio of men to dogs to spiders by 10 to get the answer.

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## Comments

Dec 08, 2002

BUT WHO CAN BE BOTHERED TO WORK IT OUT

good one! alfie, just put it in a formula.

men== n*2_legs

dogs== 2n*4_legs

spider== 4n*8_legs

2n+2n*4 + 4n*8 = 420

men== n*2_legs

dogs== 2n*4_legs

spider== 4n*8_legs

2n+2n*4 + 4n*8 = 420

LOL nice hint!

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