<PRE><B>Question 1163132</B>
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Joel and Anson have some marbles in the ratio 7:5.
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7x for Joel and 5x for Anson



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If Joel give Anson 36 marbles, 
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{{{7x-36}}} for Joel and {{{5x+36}}} for Anson



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Anson will have twice as many marbles as Joel. 
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{{{5x+36=2(7x-36)}}}


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How many marbles did joel have at first??
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.

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