P : Q = 5 : 6 ഉം R : Q = 25 : 9 ഉം ആണെങ്കിൽ P : R ൻ്റെ അനുപാതം എന്താണ്?
A10 : 13
B10 : 3
C3 : 10
D13 : 10
A10 : 13
B10 : 3
C3 : 10
D13 : 10
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How much water should be added to 60 liters of milk at a price of per liter for ₹20 to get the mixture at a price of ₹ ?