Answer :
Initial investment = 4,00, 000
So, Loss or profit is based on this initial amount .
So, Loss of 4% , so loss of money = 4 × 400000/100= Rs. 16,000
Now remaining amount at starting of second year = 4,00,000 - 16,000 = 3,84,000
So,
After second year he earned 5% , So now he have total amount = 3,84000 +
5 × 384000/100 = 3,84,000 + 19,200 = Rs 4,03,200
And
After third year he earned 10% , So now he have total amount =4,03,200 +
10 × 403200/100 = 4,03,200 + 40,320= Rs 4,43,520
So,
Total profit in entire period of 3 years = 4,43,520 - 4,00,000 = Rs. 43,520 ( Ans )