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Clarence had 20 more marbles than Jacob. They had 100 marbles altogether. When Jacob lost some marbles, Clarence had 4 times as many as Jacob. How many marbles had Jacob lost?

 Apr 6, 2021
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$c=j+20$

$2j+20=100$

$j=40$

$c=60$

 

$4(40-t)=60$

 

Find $t$.

 Apr 7, 2021

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