Question

A man spends 87% of his salary if he saves 325 rupees find the salary

Answer 1

Salary spent     = 87%
Salary saved    = 100% - 87% = 13%
Salary saved    = Rs. 325
Let the total salary be x.
            13%  of   x            =            325
            13/100 * x             =            325
            x                           =             325*100/13
            x                           =             2500
                               So, the salary is Rs. 2500 (x) 

Answer 2

Let his salary be Rsx
He spends 87% of his salary = 87% of x
                                                = (87/100) × x
                                                = 87x/100
The amount he saves = 325
⇒87x/100 + 325 = x
⇒(87x + 32500)/100 = x
⇒87x + 32500 = 100x
⇒32500 = 100x - 87x
⇒32500 = 13x
⇒13x = 32500
⇒ x = 32500/13
∴ x = 2500
∴The salary of the person is Rs2500