Question

28. Find the compounded ratio of 275 : 31. inverse of 729 : 1331, duplicate ratio of 2:5, triplicate ratio of 9 : 11, sub-duplicate ratio of 961: 1296, sub-triplicate ratio of 729 : 1331. a. 1 : 1 b. 1:2 275 : 11 d. 31:25​

Answer 1

Answer:

4:9

Step-by-step explanation:

I hope this was helpful

Answer 2

Answer:

Writing down all the ratios to be compounded :-

275 : 31

1331 : 729

4 : 25

729 : 1331

31 : 36

9 : 11

Now, canceling the similar numbers on both sides of the ratio to avoid lengthy calculations.

Therefore remaining ratios :-

275×4×9 : 25×36×11 =9900 : 9900

= 1 : 1.

Ans a) 1 : 1