Question

Manish looked out of his farmhouse window and saw a group of pigeons and donkeys and found that the total number of legs add up to 66 . How many of each kind of animals passed by his window if the total number of animal is 24

Answer 1

...x= pigeons

(24-x) = donkeys

pigeons have 2 legs = 2x

donkeys have 4 legs = 4(24-x)

for a total of 66 legs

2x+4(24-x)=66

2x+96-4x =66

-2x=66-96

-2x=-30

x=15

so there are 15 pigeons, 9 donkeys

we check:

15*2 + 9*4 = 30+36 = 66

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