ratio proportion concept

© 2007 1 -2010 tutorco.com Q1. State whether the ratios are proportional. Write yes or no. 1. 35 20 = 74 2. 38 = 32 12 Q2. Are the following in proportion? a) 2, 4, 8, 10 b) 25, 75, 12, 48 c) 16, 20, 24, 30 Pre-Al/5/3/S Topic Ratio and Proportion© 2007 2 -2010 tutorco.com d) 15, 32, 135, 288 Q3. Which the following statements are true ? a) 8:12 = 10:15 b) 8m : 21m = Rs 24 : Rs 63 Q4. Solve for x : a) 4 is to 5 as x is to 15 © 2007 3 -2010 tutorco.com b) 5 is to 7 as 20 is to x c) x is to 5 as 15 is to 25 Q5. Find the mean proportional between the numbers: a) 16,36 b) 121,100 © 2007 4 -2010 tutorco.com Q6. Find the missing number. 1. n7 = 36 28 2. 74 = 14 n