Let his income be x
Expenditure on (rent + medical + School fee)
= 26 + 9 + 15 = 50%
Therefore, Remaining amount = x/2
Exp on furniture is 25% of x/2,
ie x/2 x 1/4 = x/8
Remaining amount = x/2  x/8 = 3x/8
Because, 3x/8 = 5100 Therefore, x = 5100 x 8/3 = 13600
Therefore, Exp on rent = 13600 x 26/100 = Rs 3536
