Suppose That a Consumer Has Utility Function $\mathrm { U } ( \mathrm { x } , \mathrm { y } )$

Multiple Choice

Suppose that a consumer has utility function $\mathrm { U } ( \mathrm { x } , \mathrm { y } )$ with $\mathrm { MUx } = 5 \mathrm { y } 2 \mathrm { x }$ and $\mathrm { MUy } = 2 \mathrm { x } 2 \mathrm { y }$ . What is the marginal rate of substitution?

A) $10 \mathrm { y } 3 \mathrm { x } 3$
B) $2 \mathrm { x } / 5 \mathrm { y }$
C) $5 y / 2 x$
D) $5 \mathrm { y } 2 \mathrm { x } 2$