An amount of $ 2700 is made up with the notes of denominations $ 100, 50, 20, and 10. The number of $10 notes are 3 times the number of $20 notes. The number of $20 notes are 3 times the number of $50 notes. The number of $50 notes are 4 times the number of $100 notes. How many total notes of denomination $50 are there?