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Sam's father asks him to bundle up some old newspapers in the garage to be taken to the local recycling center. To tie the bundles, Sam cuts a number of strings of the same length and so that all the bundles will be the same size. When he is finished, he has 5 bundles of newspaper, and each one weighs 20 lbs.

a. Write an equation that can be used to determine the total weight of all the newspapers Sam has bundled.
b. Solve the equation.

 

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