To practice Problem$-$Solving Strategy $18\mathrm{.}2$ Kinetic$-$molecular theory

At what temperature is the root$-$mean$-$square speed of nitrogen molecules equal to the root$-$mean$-$square speed of hydrogen molecules at $20\mathrm{.}0$C$?$

If nitrogen and hydrogen molecules are at the same temperature, how do their root$-$mean$-$square speeds compare?