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**why is this wrong...THRUST?? i showed work!**

**1. Homework Statement**

A rocket for use in deep space is to have the capability of boosting a total load (payload plus the rocket frame and engine) of 2.25 metric tons to a speed of 10 000 m/s.

If a different fuel and engine design could give an exhaust speed of 4600 m/s, what amount of fuel and oxidizer would be required for the same task?

metric tons

**2. Homework Equations**

vf=ve ln(mi/mf)

**3. The Attempt at a Solution**

10000=4600ln(x/2.25)

x= 19.71

but its wrong. can you help?