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7 March, 06:47

A herd of dinosaurs made paintings in the sand with their claws. Each baby dinosaur made 15 paintings and each adult dinosaur made 7 paintings. The entire herd made 208 paintings in total, and there were 3 times as many baby dinosaurs. How many baby dinosaurs and adult dinosaurs were there?

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  1. 7 March, 09:19
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    Let x = baby dinosaurs

    y = adult dinosaurs

    equation 1

    total paintings = 15 painting x + 7 paintings y

    equation 2

    baby dinosaurs = 3 times adult

    x = 3y

    substitute x = 3y to equation 1

    y = 4

    x = 12

    There are 12 baby dinosaurs and 4 adult dinosaurs in a herd with 208 total paintings
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