Question

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 ​

Answer 1

Answer:

Step-by-step explanation:

4/9 * (3/4)^2 * (2/3)^2 * (9/7) =

4/9 * 9/16 * 8/27 * 9/7 =

2/21

(d) none of these

Hope it helps