Income Number of Persons Less than 200 1 - 12 = 12 Less than 250 26 - 12 = 14 Less than 300 34 - 26 = 8 Less than 350 40 - 34 = 6 Less than 400 50 - 40 = 10 Persons earn Rs200 or more but less than Rs300 = 14 + 8 = 22
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