Today’s question’s answer is

A. 85.8 m/s

Solution will be posted here tomorrow.


Previous Question(s)

Solution

Use the Rocket Equation

Dry mass means mf (Empty rocket) and you have delta-v and exhaust velocity is given.

Substituting all the values you get m0.

mf minus m0 gives you the mass of propellant needed.

Answer is: B. 11050 kg