Question
At a factory, Paul could assemble 7 toy cars in a day while Mark could assemble 4 more toy cars than him in a day. If Mark was absent for 4 days, how many days would he need to assemble 13 more toy cars than Paul?
3 m

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At a factory, Paul could assemble 7 toy cars in a day while Mark could assemble 4 more toy cars than him in a day. If Mark was absent for 4 days, how many days would he need to assemble 13 more toy cars than Paul?