If A is substituted by 26, B by 25 and so on upto Z by 1. What will be the sum of numbers substituted for the word ULTRA?

The substitution rule follows the reverse alphabetical order, where the value of a letter is calculated as $27-\text{forward position}$. Let's find the values for the letters in the word ULTRA:
* $\text{U}=27-21=6$
* $\text{L}=27-12=15$
* $\text{T}=27-20=7$
* $\text{R}=27-18=9$
* $\text{A}=27-1=26$

Now, calculate the sum of these numbers:

$$\text{Sum}=6+15+7+9+26=63$$