Final answer:
The difference between the length of the sides of Lalith and Shekhar's square fields is 150m.
Step-by-step explanation:
To find the difference between the length of the sides of Lalith and Shekhar's square fields, we need to calculate the lengths of their respective sides. We know that Lalith used 8 bundles of fencing wire, each with a length of 20m, which cost him a total of RS.800. Shekhar used some other bundles, each with a length of 30m, which cost him a total of RS.300. Since both paid the same price per meter wire, we can equate the total cost and solve for the lengths of the sides of their fields:
For Lalith:
8 bundles x 20m/bundle = 160m
For Shekhar:
300 RS / (30 RS/m) = 10m
Therefore, the length of the sides of Lalith's field is 160m and the length of the sides of Shekhar's field is 10m. The difference in length between the sides of their fields is 160m - 10m = 150m.