Mohan gets a salary of Rs.6435, Rs.6927, Rs.6855, Rs.7230 and Rs.6562 for 5 months. How much salary he must have in the sixth month so that he gets an average of Rs.6500?

4991

Let the salary of 6th month be x

So, according to the question:

Average salary of 6 months = \(\frac{\text{6435 + 6927 + 6855 + 7230 + 6562 + x } }{6 }\)

6500 =  \(\frac{\text{34,009 + x } }{6 }\)

6500 x 6 = 34,009 + x

39000 = 34009 + x

x = 4991