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Math091:   Spiders, Dragonflies and Cicadas
If all insects have 8 legs, then how many legs do we have?  (Difficulty Level: ¨ 1)
Math/Math091.jpg A spider has 8 legs. A dragonfly has 6 legs and 2 pairs of wings. A cicada has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?
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