Question

10. The ratio compounded of 4:9, the duplicate ratio of 3:4, the triplicate ratio of 2:3 and 9:7 is
(a) 2:7
(b) 7:2
(c) 2:21
(d) none of these

11. The ratio compounded of duplicate ratio of 4:5, triplicate ratio of 1:3, sub duplicate ratio of
81 : 256 and sub-triplicate ratio of 125 : 512 is
(a) 4:512
(b) 3:32
(c) 1:12
(d) none of these

ans for this plz​

Answer 1

Answer:

Q10. 2:21

Step-by-step explanation:

duplicate ratio of 3:4=3^2:4^2=9:16

triplicate ratio of 2:3=2^3:3^3=8:27

therefore the solution will be

4/9×9/16×8/27×9/7=2/21

=2:21

Q11. none of the above

16/25×1/27×9/16×5/8=1/120= 1:120