Problem 17

There are 3 types of vehicle engines: engine A, engine B, and engine C.

• Engine A has a speed $2$ times the speed of engine C.
• Engine B has a speed $\frac{1}{3}$ times that of engine A.

If the distance traveled using engine A is $20\text{ km}$ in $2\text{ hours}$, then the distance traveled using engine B in $3\text{ hours}$ is...