Write P if each pair of ratios form a proportion and NP if not. (5pts.) ______ 1. 6:8 = 9:21 ______ 3. 7:8 = 14:16 ______ 5. 2/3 = 4/10 ______ 2. 5:8 = 6:9 ______ 4. 4/3 = 4/7 Find the value of n. (5pts.) ______ 1. 5:10 = n:30 ______ 3. 7:9 = 56:n ______ 5. 3/5 = n/20 ______ 2. 4:n= 15:30 ______ 4. n/20 = 2/5