Answer:
Equation B!
Explanation:
If she ate, 2/3 of her pastry, and 1/5 later, and its asking you the total amount of pastry she ate. The equation would be 2/3 + 1/5, and if you would solve that, you would get the answer 13/15! So the full equation is 2/3 + 1/5= 13/15 , which is equation B!
cheers!