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ASSUMPTIONS
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White shirt doesn't account for only plain white shirt but also include other formal white shirtsCalculate the Number of white shirts worn on a monday in delhi
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People wear white shirts either for their occupation as a mandatory uniform or on purpose such as at functions, vacations etc. Step 1: Calculate the Number of people who have a white shirt
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Children below 5 years of age would not wear a white shirt.Population of delhi30,000,000
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People who wear shirts might not have white shirts due to the choice of other colors.Age Divide0-5 yrs5-25 yrs25-60 yrs60+ yrs
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5%40%45%10%
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1,500,00012,000,00013,500,0003,000,000
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STRUCTUREOccupation DivideStudentsOthersStudentsWorking ProfessionalsOthersRetired
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Population of delhi
White Collar Job
Blue Collar Job
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X80%20%10%20%30%40%100%
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Age Divide9,600,0002,400,0001,350,0002,700,0004,050,0005,400,0003,000,000
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XMandatory Uniform as Shirts70%20%10%95%50%10%5%
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Occupation Divide6,720,000480,000135,0002,565,0002,025,000540,000150,000
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XOthers who will be willing to wear a shirt10%30%15%0%10%30%10%
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Mandatory Uniform as Shirts960,000720,000202,5000405,0001,620,000300,000
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+Total number of people who wear shirts16,822,500
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Others who will be willing to wear a shirt Have a White Shirt80%40%70%100%40%50%40%
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=6,144,000480,000236,2502,565,000972,0001,080,000180,000
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Total number of people who wear shirtsStep 2: Calculate the Number of people who go out wearing a white shirt
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XAbsent on Monday10%
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Have a White Shirt614,40048,00023,625256,50097,200108,00018,000
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-Wear a white shirt for their occupation on Monday 40%10%20%50%0%20%10%
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Absent on Monday2,211,84043,20042,5251,154,2500194,40016,200
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=3,662,415
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Wear a white shirt for their occupation on Monday Wear a white shirt on Purpose on a Monday 0.2%
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+23,315
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Wear a white shirt on Purpose on a Monday TOTAL3,685,730
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+
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Total number of white shirts worn on a Monday in Delhi
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BROWNIE POINTS
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Blue Collar Job professionals do not wear a white shirt at their work but can wear a white shirt for any other purpose
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Some people might be absent/do not have to go to work on Monday due to illness or a hybrid mode of job.
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SANITY CHECK
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Let's take an example of a metro as we can see all types of people from students to professionals travelling from metro.
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No of coaches in a metro7
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Avg. no. of people in a coach50
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Percentage of people traveling for work/ occupation70%
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Percentage of people wearing a shirt50%
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Percentage of people wearing a white shirt35%
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No. of people wearing a white shirt (7*50*70%*50%*35%)43
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Percentage of people wearing a white shirt in a metro12%
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Percentage of people wearing a white shirt in Delhi12%
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