a) 9 5 4 / 20 8 15 = 180
b) 4 / 9 : 7 / 10 : 8 / 3 = 4/94 / 94/9 10/710 / 710/7 3/83 / 83/8 = 0.17857
c) 9 / 10 5 / 33 : 9 / 16 = 9/109 / 109/10 5/335 / 335/33 * 16/916 / 916/9 = 0.30303
a) 9 5 4 / 20 8 15 = 180
b) 4 / 9 : 7 / 10 : 8 / 3 = 4/94 / 94/9 10/710 / 710/7 3/83 / 83/8 = 0.17857
c) 9 / 10 5 / 33 : 9 / 16 = 9/109 / 109/10 5/335 / 335/33 * 16/916 / 916/9 = 0.30303