Answer :
On a particular day, our technician completed six jobs and accumulated the following hours:
[tex]1.5,0.6,0.4,1.0,2.2,1.5[/tex]The total number of hours points directly to an addition. The total number of hours he accumulated (T) was:
[tex]T=1.5+0.6+0.4+1.0+2.2+1.5=7.2[/tex]Our desired answer is 7.2.