Here,
[tex]1 \: batch \: requires \: 3 \frac{1}{2 } = 3.5 \: jars \: of \: pasta \: \\ sauce. \\ so \: 4 \frac{1}{2} = 4.5 \: batches \: requires \: 3.5 \times 4.5 \\ = 15.75 \: jars \: of \: \: pasta \: sauce.[/tex]
