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Define x:
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Let the number of shells Carron collected be x.
Carron = x
Mandee = 4x
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Construct Equation and solve x:
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x + 4x = 40
5x = 40
x = 8
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Find the number Carron and Mandee have:
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Carron = x = 8
Mandee = 4x = 4(8) = 32
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Answer: Mandee collected 32 shells.
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