Answer:
your can only divide then up in that specific sequence one time
I don't know if you've learnt this, but there's something called the KFC rule (you use it when dividing fractions), so k basically stands for keep (so you keep the first fraction), f stands for flip (so you flip the second fraction) and c stand for change (you change the division sign to a multiplication sign)
So you get
5/20*11/5
55/100
which is 11/20
so, an answer of 11/20 would make Quintin correct

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Find 1 cup :
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Find 4 cups :
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Answer: John can make 6 batches with 4 cups of flour.--------------------------------------------------------------------------------------------