Weekly wages (in ₹)0−100100−200200−300300−400400−500Number of workers4039343045
What is the number of people whose wage is less than ₹400?LessNo. of workers Than 1004020040+39=7930079+34=113400113+30=143500143+45=188
∴ The number of people whose wage is less than ₹400 is 143.