The line chart given below shows the cost price and selling price of four articles. What is the ratio of average selling price of M and N to the average cost price of P and Q ?

19 : 29 10 : 7 7 : 10 31 : 18

7 : 10

Average selling price of M & N = \(\frac{400 + 650 }{2}\) = 525 Average cost price of P & Q = \(\frac{600 + 900 }{2}\)  = 750 Required ratio = 525 : 750 = 7 : 10