Write a function called convert$\_$speed which takes a speed in kilometers per hour $($kph$)$ as an argument. Your

function should convert kilometers per hour $($kph$)$ to miles per hour $($mph$)$ and return mph as a float. For example,

$60$ km $=37\mathrm{.}284$ mi$.$ Assume one kilometer has $0\mathrm{.}6214$ miles. Use type annotation in the function header to denote

the appropriate data types.

b$)$ The distance a vehicle travels can be calculated as distance $=$ speed $\backslash$times time. Write a function

called distance$\_$traveled which takes two positive floating$-$point numbers, the speed of a vehicle $($in kilometers

per hour$)$ and the hours it has traveled as arguments. The function returns the total distance traveled in miles as a

float. For example the distance traveled in $3$ hours at $40$ kph is $74\mathrm{.}568$ miles. Your function must call

convert$\_$speed. Use type annotations in the function header to denote the appropriate data types.