Question

Vinaya gave 10% in charity from her salary, and then 20% of the remaninig she gave to her friend as Loan. She left now with rs. 7200. what is the salary of Vanaya?

Answer 1

Let the Total salary be x
Given :
10/100x = charity
20/100 of 90%x = Gave her Friend as Loan
7200 RS = She is left with

To Find :
Total Salary of Vanaya

According to question-
10/100x + 20/100 × 90/100x + ₹7200 = x
1/10x + 9/50x + ₹7200 = x
(5x + 9x + 360000)/50 = x. ..... (L.C.M)
14x + 360000 = 50x
360000 = 50x - 14x
360000 = 36x
360000/36 = x

x = ₹10000