[" 10.Two men with weights in the ratio "4:3" run up a "],[" staircase in time in the ratio "12:11." The ratio of power "],[" of the first to that of second is: "]

Two men with weights in the ratio 5 : 3 run up a staircase in times in the ratio 11 : 9 . The ratio of power of first to that of second is –

Two men with weights in the ratio 3 : 2 run up a staircase in times in the ratio 7 : 4. The ratio of power of first to that of second is :-

The distance travelled by a ray of light in two media, in the same time are in the ratio 2 : 3. The ratio of refractive index of the first medium to second medium is

The distance travelled by a ray of light in two media, in the same time are in the ratio 2 : 3. The ratio of refractive index of the first medium to second medium is

Two numbers are in the ratio 3:5. If 9 be subtracted from each, then they are in the ratio of 12:23. The second number is :

If A and B are in the ratio 3 : 4 and B and C are in the ratio 12 :13 , then A and C will be in the ratio