Read the following table carefully and answer the questions given below it.
Sales of Aviator sun-glasses by six stores M, N, O, P, Q, and R during 5 years
What is the respective ratio between the total number of sun glasses sold by store M in the years 2001, 2002 and 2003 and that sold by store P in the same years ?
Sun glasses sold in the years 2001, 2002 and 2003 by :
Store M = 750 + 680 + 575 = 2005
Store P = 670 + 490 + 870 = 2030
=> Required ratio = 2005 : 2030
= 401 : 406
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