Question

in a certain year , the average monthly income of a person is 3400,and that for the first 8 months is 3160,and for the last 5 months is 4120.The income in the 8 th month of the year is

Answer 1

Let the Income in eighth month = Rs. x 

According to the question,

8×3160 + 5×4120 = 12×3400 + x

25280 + 20600 = 40800 + x 

45880 = 40800 + x 

x = Rs. 5080