Say i was to go and shoot my desert eagle, i run out of the bullets that have max grain. they travel at 1550 fps, i switch to the rounds that have 2.5% less grain than the max grain how can i use that number to find the fps of that round?

To find FPS of next round, we have to decrease 1550 by 2.5% of it.

1511.25 FPS (for next round)

Step-by-step explanation:

The max grain has 1550 fps

Also, the less grain has 2.5% LESS than 1550 fps max grain.

To find FPS of next round, we have to decrease 1550 by 2.5% of it.

Let's first find 1550's  2.5%.

0.025 * 1550 = 38.75

We subtract this from 1550 fps:

1550 - 38.75 = 1511.25 FPS (for next round)

the answer is 99.

126 maybe. sorry