Well 1 more cup of chocolate chips since she already put one cup and she needs 2 cups?
Answer: 1 more cup
The answer for this problem is 26.
mathematically the answer to that is 18 because 10.2 minus 2.4 is equal to the difference of 7.8 and 7.8 plus 10.2 is equal to the sum of exactly and positively 18
I'm sorry but your photo doesn't really show the whole paragraph clearly so I can't answer
