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Mathematics 9 Online
OpenStudy (anonymous):

I have a tricky question. I found the answer(10 birds & 20 lions) but I can't think of a equation to write the answer. Here the question problem: Tourist: "How many birds and loin do you have in you zoo?" ZooKeeper: "There are 30 heads and 100 feet?" Tourist: "I can't tell from that." ZooKeeper" Oh, yes, you can! Can you? Find the numbers of each

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