Answer:
Hence amount of Alana's donation is $4.5.
Step-by-step explanation:
Amount of Alana's donation = x
Her grandmother agreed to add $4.00 to the amount Alana earned.
So new amount of money = (x+4)
She gives only half of the sum which is (x+4)/2.
She gave her $4.25 so both values must be equal.
[tex]\frac{\left(x+4\right)}{2}=4.25[/tex]
[tex]x+4=4.25*2[/tex]
[tex]x+4=8.5[/tex]
[tex]x=8.5-4[/tex]
[tex]x=4.5[/tex]
Hence amount of Alana's donation is $4.5.