Current Attempt in Progress

In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer spce. From stationary positions, they push against each other. Bonzo flies off with a velocity of $+1\mathrm{.}3\frac{m}{s},$ while Ender recoils with a velocity of $-2\mathrm{.}8\frac{m}{s}.$ Determine the ratio $\frac{m_{\text{B}\text{o}\text{n}\text{z}\text{o}}}{m_{\text{E}\text{n}\text{d}\text{e}\text{r}}}$ of the masses of these two enemies.

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