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 rules represent the reverse alphabetical positions of letters, calculated as:
$$\text{Reverse Value}=27-\text{Standard Position Value}$$

Let's find the values for each letter of the word ULTRA:

* $\text{U}$ (Standard Position = 21) $\to 27-21=6$
* $\text{L}$ (Standard Position = 12) $\to 27-12=15$
* $\text{T}$ (Standard Position = 20) $\to 27-20=7$
* $\text{R}$ (Standard Position = 18) $\to 27-18=9$
* $\text{A}$ (Standard Position = 1) $\to 27-1=26$

Summing these individual values:

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