Answer:$2$

Ocean: Total Cost $-$ Fixed Cost $=$ Variable Cost $($$$823,000-$$$600,000=$$$223,000)$

Variable Cost $\frac{?}{?}$ Units $=$$$223,\frac{000}{2\mathrm{.}5}$ million lbs$.=$$$\frac{0\mathrm{.}0892}{l}b.$

Equation: $600,000+\mathrm{.}0892x(x=$ demand in pounds$)$

Air: $,$ Total Cost $-$ Fixed Cost $=$ Variable Cost $($$$800,000-$$$450,000=$$$350,000)$

Variable Cost $\frac{?}{?}$ Units $=$$$350,\frac{000}{2\mathrm{.}5}$ million lbs$.=$$$\frac{0\mathrm{.}14}{l}b.$

Equation: $450,000+\mathrm{.}14x(x=$ demand in pounds$)$

$600,000+\mathrm{.}0892x=450,000+\mathrm{.}14x(solve$ for $x)$

$x=2,952,756$ lbs$.,$ Ocean$/$Air cost the same when demand is $2,952,756$ lbs$.$

Answer:$3$