Lets solve this together

The expression is:

5 + 15 − 5 × 2

According to the order of operations (multiplication first):

👉 5 × 2 = 10

Now substitute:

👉 5 + 15 − 10

Then go left to right:

👉 5 + 15 = 20
👉 20 − 10 = 10

✅ Correct answer: 10

So the girl is right 👍