Question

Srwan spend 20% Of his monthly salary on food, 40% of the remaining on house rent and balance amount spends on other items of routine expenses. What is his yearly salary if he spends rs. 5760 Per month on other items of routin expenses ?

Answer 1

Let the monthly salary be x.
Spend on food = 20% of x = x/5.
Remaining amount = x-x/5 = 4x/5.
House rent = 40% of 4x/5 = 8x/25.
Remaining amount = 4x/5 -8x/25 = 12x/25, which is the per month expenses on other items.
Now, As per the question,
12x/25 = 5760
x = 5760*25/12 = 12000.
So, Annual salary = 12*12000 = Rs 1,44,000.