Answer:
"4.71" is the correct answer.
Step-by-step explanation:
As we know, 45 envelopes addressed in 2 hours then,
⇒ [tex]\frac{45}{2} =22.5[/tex]
and, 45 in 3 hours,
⇒ [tex]\frac{61}{3}=20.3[/tex]
Now by adding all together, we get
⇒ [tex]23+22.5+20.3[/tex]
⇒ [tex]65.8[/tex]
and multiply it by "4.71", we get
⇒ [tex]65.8\times 4.71[/tex]
⇒ [tex]309.91[/tex]
Round it "310".
So that "4.71" is the right answer.
