sample output is correct 28, then why not able to solve it correctly. Plz help me this is my very first experience in DSA Learning series.

def sum_total(a, b, x, y):

return (a*x+b*y)

print(sum_total(2, 4, 4, 5))

sample output is correct 28, then why not able to solve it correctly. Plz help me this is my very first experience in DSA Learning series.

def sum_total(a, b, x, y):

return (a*x+b*y)

print(sum_total(2, 4, 4, 5))