Відповідь:

x = int(input("Enter the number of patties Chucky eats per day: "))

u = int(input("Enter the number of patties Cherry eats per day: "))

chucky_weight = 1.5  # kg

cherry_weight = 2.5  # kg

weight_difference = cherry_weight - chucky_weight  # kg

patty_weight_gain = 0.1  # kg

patties_to_gain_weight = weight_difference / patty_weight_gain  # number of patties

days_to_catch_up = patties_to_gain_weight / (x - u)  # days

if x <= u:

   print("Chucky cannot catch up with Cherry.")

else:

   print("It will take Chucky", days_to_catch_up, "days to catch up with Cherry.")