From the salary of an officer 10% is deducted as house rent;

From the salary of an officer 10% is deducted as house rent; 15% of the rest he spends on children’s education; 10% of the balance he spends on clothes. After this expenditure, he is left with ₹ 2754. Find his salary.

Let the salary be ₹100. Then,
House rent = ₹10; Balance = ₹(100 – 10) = ₹90.
Expenditure on children’s education = 15% of ₹90

=	15 × 90	= ₹	27
	100		2

Balance now =		90 -	27
			2

=		180 - 27		= ₹	153
		2			2

Expenditure on clothes

=		10% of	153		= ₹	153
			2			20

Now, balance

=		153	-	153		= ₹	1377
		2		20			20

If last balance is ₹	1377	. then salary = ₹100.
	20

If last balance is ₹ 2754, then salary

= ₹		100 × 20	× 2754		= ₹ 4000.
		1377