Answer:
[tex]21/ \frac {1}{8}[/tex]
Step-by-step explanation:
Since we're given that a batch requires 3 and one fourths cups of sugar, this is written as
[tex]3/ \frac {1}{4}[/tex]
If she wants 6.5 batches then we just cross multiply
1 batch=[tex]3/ \frac {1}{4}[/tex]
6.5 batches=x
X=[tex]6.5\times 3/ \frac {1}{4}[/tex]
X=[tex]6/ \frac {1}{2}\times 3/ \frac {1}{4}[/tex]
X=[tex]\frac {13}{2}\times \frac {13}{4}[/tex]
X=[tex]\frac {169}{8}[/tex]
X=[tex]21/ \frac {1}{8}[/tex]