I am 15, 130 lbs, and 5'7, and a vegetarain..

My question is:
If I ate....

Breakfast-2 pieces of Toast with spray butter
Lunch- Peanut butter sandwich
Snack- Fruits Or vegetables
Dinner- Anything (but small portioned)


Would I lose weigh if I ate this? How long would it take to lose 10 lbs by doing this?

Plus I take addarall, which makes me not as hungry, and I do some excersizing..