Answer: Diana donates $125 each month.
Step-by-step explanation:
Let x = Amount of money Diana donates each month.
Money she donates in a year = 12x [ 1 year = 12 months]
Given: Money she donates in a year = $1500
So, [tex]12x=1500\Rightarrow\ x=\dfrac{1500}{12}=\$125[/tex]
i.e. Amount of money Diana donates each month = $125
Hence, Diana donates $125 each month.