We are given that 1 mile is equal to approximately 1.6 kilometers.
A speed limit sign in Europe reading 65 kph (kilometers per hour) means you can go about how many miles per hour (mph)?
We can set up the following proportion
![\frac{1\: mi}{1.6\operatorname{km}}=\frac{x\: mi}{65\operatorname{km}}]()
Solving the above equation for x
![\begin{gathered} x=\frac{1mi}{1.6\operatorname{km}}*65\operatorname{km} \\ x\approx40\: mi \end{gathered}]()
Therefore, 65 kph is equivalent to approximately 40 mph.
The correct option is B.