In what ratio coffee at 320 Rs/kg should be mixed with the coffee at 370 Rs/kg so that after mixture its rate become 335 Rs/kg if the quantity of 1st type is 28 kg what will be the quantity of the 2nd coffee?
Ratio = 35:15 = 7:3 1st type coffee is 28 kg. So, 7 means 28 kg. Therefore, 2nd type coffee = 28 x (3/7) = 12 kg
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