which is the greatest ratio of following 3:4 , 5:7 ,9:11 ,1:8

The given ratios are 3 : 4; 5 : 7; 9 : 11 and 1 : 8.
Which can be rewritten as 34; 57; 911 and 18.
To find the greatest number, we have to first find the L.C.M. of their denominators as;

2×2×1×7×11×2 =616 
Now we make the denominators of all given rational numbers same as;
34×154154 = 46261657×8888 = 440616911×5656 = 504616 18×7777 = 77616
So the greatest rational number is 504616 i.e. 911.
Therefore the greatest ratio is 9 : 11.

  • 1

9:11 is the greatest.

by k.premkailash

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