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1). 7 : 52). 6 : 53). 7 : 44). 1 : 1 |
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Answer» Let the amounts of FIRST and second mixture taken be M and N, respectively. ⇒ Amount of milk in first mixture = 6M/11 ⇒ Amount of water in first mixture = 5M/11 ⇒ Amount of milk in second mixture = 7N/11 ⇒ Amount of water in second mixture = 4N/11 Amount of final mixture = (M + N) ⇒ Amount of milk in final mixture = 7(M + N)/12 ⇒ 6M/11 + 7N/11 = 7(M + N)/12 ⇒ 72M + 84N = 77M + 77N ⇒ 5M = 7N ⇒ M/N = 7/5 ∴ Ratio should be 7 : 5 |
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