The Formula is:

We know that V1 = 752 ML
T1 = 25 + 273 = 289
T2 = 100 + 273 = 373
V2 = ?
So, we need to find V2, using the formula mentioned, so you replace each term by it's value, and Let x be the value of V2, so you get:

Then, you move 373 (T2) next to other term, and since it's a division, it become a multiplication. so you get:

You do the calculations, and you get about x = 941
So, V2 = 941
So the volume at 100.0's is 941
Hope this Helps! :)