Need help with this, will give brainlist for best answer​ please don't answer just for the points if you don't know how to do :)

At the many chips cookie company they are serious about the number of chocolate chips in their cookies they claim that each cookie hasn't c chips. if their claim is true there will be 200 chips in 10 cookies

3382-299=3383- ? fill in the blank?

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left