Codewars notes - Transportation on vacation

Exercise：

 Solution:

1.

def rental_car_cost(d):
    pd = 40 * d
    if d < 3:
        return pd
    elif d < 7:
        return pd - 20
    else:
        return pd - 50

2.

def rental_car_cost(d):
    return 40 * d - (20 * (2< d <7)) - (50 * (d >6))