ATQ, Let the income of 'D' be Rs. 'q'. Savings of 'C' = 0.40 X 54000 = Rs. 21,600 So, savings of 'D' = 0.25 X q = 21600 + 2500 So, q = (24100/0.25) = 96,400 Therefore, expenditure of 'D' = 0.75 X q = 0.75 X 96400 = Rs. 72,300 So, required difference = 72300 - 32400 = Rs.39,900
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