Question
At a factory, Tim could assemble 9 aeroplane models in a day while Ben could assemble 5 more aeroplane models than him in a day. If Ben was absent for 3 days, how many days would he need to assemble 12 more aeroplane models than Tim?
3 m

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At a factory, Tim could assemble 9 aeroplane models in a day while Ben could assemble 5 more aeroplane models than him in a day. If Ben was absent for 3 days, how many days would he need to assemble 12 more aeroplane models than Tim?