KOTTAYAM
24 Points
Joined August 2014
1)the ratio compounded of 4:9 and the duplicate ratio of 3:4 is........
2) the sub-triplicate ratio of a6 : 8b³
3) If A : B = 4 : 5, B : C = 6 : 7, find A : C
4) If P:Q is the sub duplicate ratio of P-X2 : Q- X2 then X2 is �.?
5) If 2S : 3T is the duplicate ratio of 2S - P : 3T � P then�.?
6) The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms in 5 hrs, the speed of the first train is �?