Question
At a factory, Mark could assemble 7 toy cars in a day while Andy could assemble 3 more toy cars than him in a day. If Andy was absent for 3 days, how many days would he need to assemble 19 more toy cars than Mark?
3 m

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At a factory, Mark could assemble 7 toy cars in a day while Andy could assemble 3 more toy cars than him in a day. If Andy was absent for 3 days, how many days would he need to assemble 19 more toy cars than Mark?