To find the cost per mL, we first need to convert $10 \mathrm{f} \tilde{5}$ to mL. Since $1 \mathrm{f} \tilde{5} = 30 \mathrm{mL}$, we have:
$10 \mathrm{f} \tilde{5} = 10 \times 30 = 300 \mathrm{mL}$
Now, we can calculate the cost per mL:
Cost per mL = $$5.6 /
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