The following table gives the distribtution of weekly income of 160 families in a town : Weekly Income ( $ ) 24) No. of Families 2000 – 4000 20 4000 – 6000 40 6000 – 8000 50 8000 –12000 32 12000 –16000 16 16000 -20000 2 (i) Calculate the lower and upper quartile income levels. (ii) It is decided that 80% of the families should pay income tax. What is the minimum taxable income?

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