Question 1170322
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Formulate a quadratic equation then answer what is asked in the problem.
John can answer all the problem solving in the activity in Math 9 module within 24 hours alone. 
But Justine can answer it 4 hours more than John. How long will it take Justine to answer? 
How many hours to finish answering the activity if they worked together?
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To solve this problem, quadratic equation is not needed.


Moreover, quadratic equation has no any relation to this problem.



                God,  save us from such teachers,

                who themselves know nothing,

                but,  nevertheless,  compose  nonsensical Math "problems"

                and disseminate them in the  Internet.