Question

of a man's salary 20% is paid as rent,55% are his living expenses,15% is deposited in the post office. If he spends the remaining Rs.30 on the education of his children,Find his salary.

Answer 1

Let the man's salary be x.

Amount paid as rent=20x/100 = 4x/20

Amount paid as living expenses = 55x/100 = 11x/20

Amount deposited in post office = 15x/100 = 3x/20

Amount for children's education = Rs.30

Therefore,

4x/20 + 11x/20 + 3x/20 + 30 = x

(4x+11x+3x)/20 + 30 = x

18x/20 +30 = x

9x/10 + 30 = x

LCM=10

9x+(30*10)/10 = x

9x+300 = x*10

300=10x-9x

300 = 1x

Therefore, x =Rs. 300