Question
At a factory, George could assemble 8 toy helicopters in a day while Daniel could assemble 3 more toy helicopters than him in a day. If Daniel was absent for 4 days, how many days would he need to assemble 21 more toy helicopters than George?
3 m

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At a factory, George could assemble 8 toy helicopters in a day while Daniel could assemble 3 more toy helicopters than him in a day. If Daniel was absent for 4 days, how many days would he need to assemble 21 more toy helicopters than George?