raman spends ruppes x and saves rupees y per day. what was his income after three weeks
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Income of one day = savings + expenditure
so, Income of one day = (x+y)
SO, Income of 3 weeks (21 days) = 21(x+y) rs
so, Income of one day = (x+y)
SO, Income of 3 weeks (21 days) = 21(x+y) rs
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