Greta’s salary was x thousand dollars per year, then she received a y% raise. Annika’s salary was y thousand dollars per year, then she received an x% raise. x and y are positive integers.

Quantity A : The dollar amount of Greta’s raise

Quantity B : The dollar amount of Annika’s raise

The answer says C, as we know x% of y == y% of x

but,

I thought the answer was D. Please correct me where I am wrong.

If x = 30 and y = 10

x+y% raise = 30 + 10% = 33

y+x% raise = 10 + 30% = 13.

I can also do this for x=200 and y=2

200+2% raise = 202

2 + 200% raise = 6