Maths Olympiad Prep

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Algebra Difficulty 3.7 AMC 10/12 Find the answer Slovenia

In a zoo rabbits, parrots and snakes have 24 heads, 14 wings and 62 legs. How many snakes are there in this zoo?

Pick one

Solution

Rabbits and snakes have no wings and parrots have two wings each, so there are 14÷2=714 \div 2 = 7 parrots in the zoo. Thus, the parrots account for 72=147 \cdot 2 = 14 legs. Snakes have no legs, so the rabbits have 6214=4862 - 14 = 48 legs altogether. Each rabbit has 44 legs, so there are 48÷4=1248 \div 4 = 12 rabbits in the zoo, as well as 24127=524 - 12 - 7 = 5 snakes.

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