Answer:
Hence, the hourly rental fee is [tex]\$\: 12[/tex].
Step-by-step explanation:
Time for which Roberto rented the truck [tex]=9[/tex] hours.
Rental fee [tex]=\$ \:50[/tex]
Time for which Allison rented the truck [tex]=4[/tex] hours.
Rental fee [tex]=\$ \:110[/tex]
Both companies have the same hourly rental fee.
Let the hourly rental fee of both the companies be [tex]x[/tex].
Both spent the same amount.
So, according to the question,
[tex]\Rightarrow 50+9x=110+4x[/tex]
[tex]\Rightarrow 9x-4x=110-50[/tex]
[tex]\Rightarrow 5x=60[/tex]
[tex]\Rightarrow x=\frac{60}{5}[/tex]
[tex]\Rightarrow x=12[/tex]
Hence, the hourly rental fee is [tex]\$\: 12[/tex].