John needs to replace his shoes so he decides to buy a $150 pair of Nikes and a $120 pair of work boots.  Tax is 10%.  How much did he pay for everything?
The shoes cost $150 + $120 = $<<150+120=270>>270
The tax was $270 * .1 = $<<270*.1=27>>27
So the total cost was $270 + $27 = $<<270+27=297>>297
#### 297