A person spent 40% of his monthly salary on house rent and 30% of the remaining amount on food. If the person is left with rs. 3591 then what is his monthly salary?
Answers
Let the person has a monthly salary as X.
Since he spent 40% of his salary on house rent
House rent = 40% of X = 40*X/100 = 0.4X
Now his remaining salary after house rent is monthly salary minus the house rent.
Remaining Salary after house rent = X - 0.4 X =0.6X
Now it's provided that he used 30% of his remaining salary on food
Salary used for food =
30% of 0.6X = 30 *0.6X/100 =0.18X
percentage of salary he is left with = X -0.58X =0.42X
Therefore we get,
Salary used for rent = 0.4X
Salary used for food = 0.18X
Also, it's given that he is left with ₹3591 after all the expenditure.
From the calculation above we realise that the person is left with 42% of X i.e. 0.42X which is equal to ₹3591
Putting this in equation
0.42X =3591
X= 3591/0.42 =₹8550
Hence the total salary of person is ₹8550.