While doing a science experiment in the physics lab, John took 6 measurements of the temperature and wrote the average of those as an answer. If the measurements of the temperature are 0, -1, 1, -4, -3 and 2 then what is the final answer of his experiment?
An amount of QR 3120 is made up with the notes of denominations QR 100, 50, 20, and 10. The number of QR10 notes are 2 times the number of QR20 notes. The number of QR20 notes are 3 times the number of QR50 notes. The number of QR50 notes are 4 times the number of QR100 notes. How many total notes of denomination QR10 are there?