to paint his house, samuel bought 2 cans of paint and one roller for $30. when friends came over to help he went back to the store and bought 3 more cans of paint and two paint rollers for $50. how much did he pay for a roller?

Answer :

$10 for one roller. If it was $30 for 2 cans of paint and one roller, and $50 for 3 cans of paint and 2 rollers, just make everything $10.

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