An amount of ¥ 10350 is made up with the notes of denominations ¥ 100, 50, 20, and 10. The number of ¥10 notes are 4 times the number of ¥20 notes. The number of ¥20 notes are 5 times the number of ¥50 notes. The number of ¥50 notes are 3 times the number of ¥100 notes. How many total notes of denomination ¥20 are there?