don't spam..............
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Step-by-step explanation:
Weight. No. of persons. c.f.
40-45. 4. 4
45-50. 4. 8
50-55. 13. 21
55-60. 5 26
60-65. 6. 32
65-70. 5. 37
70-75. 2. 39
75-80. 1. 40
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