Question

The compound ratio of 4:5 and Sub duplicate ratio of a:9 is 8:15.Find 'a'​

Answer 1

Step-by-step explanation:

a=12/5

4/5-a/9=8/15

4/15=a/9

a=12/5

Answer 2

Answer:

4 : 5 x root a : 3 = 8 : 15

4 root a : 15 = 8 : 15

a = 4

compound ratio of a : b and c : d is

ac : bd