Question
At a factory, Archie could assemble 6 aeroplane models in a day while Brandon could assemble 4 more aeroplane models than him in a day. If Brandon was absent for 5 days, how many days would he need to assemble 15 more aeroplane models than Archie?
3 m

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At a factory, Archie could assemble 6 aeroplane models in a day while Brandon could assemble 4 more aeroplane models than him in a day. If Brandon was absent for 5 days, how many days would he need to assemble 15 more aeroplane models than Archie?