Since the bullets are fired horizontally from the same place, they have the same height.

The formula for Time is

t= (2H/g)^1/2.

since the acceleration (g) is also same for both the bullets they will reach the ground at the same time.

Thus, the time taken to reach the ground is independent of the initial horizontal speed of the bullets. Hence, both the bullets fired simultaneously in the horizontal direction from the same height will reach the ground simultaneously.

The vertical component must be

VA cos 53 = VB cos 37

Solving this VA = 60 cot 37

= 60/tan 37

=60*4/3 = 80 units.

This is the final answer. Thank you.