II. Match the letter that corresponds with the correct answer for N.
6. 3:4 = N: 12. a.6
7. 5:3 = 10:N. b.30
8. 3:10 = 9:N. c.9
9.3: N=9:15. d.5
10. N: 5 = 4:10. e.7
f.2
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