Answer:
4 batches: [tex]2\frac{2}{3}[/tex] cups
7 batches: [tex]4\frac{2}{3}[/tex] cups
Step-by-step explanation:
If he uses 2/3 cup of flour for each batch, then that is 2/3 four times, or 2/3 · 4.
[tex]\frac{2}{3}[/tex] × [tex]\frac{4}{1}[/tex]
= [tex]\frac{8}{3}[/tex] = [tex]2\frac{2}{3}[/tex]
If he makes three more, than that will be 7 batches in total. We can multiply 2/3 by 3 to find out how much will be needed for those extra three, then add that product to [tex]2\frac{2}{3}[/tex].
[tex]\frac{2}{3}[/tex] × [tex]\frac{3}{1}[/tex]
= [tex]\frac{6}{3}[/tex] = 2
[tex]2\frac{2}{3} +2[/tex] = [tex]4\frac{2}{3}[/tex]
Thus, [tex]2\frac{2}{3}[/tex] and [tex]4\frac{2}{3}[/tex] are the answers.
hope this helps!