Two mixtures have milk and water in the ratio 6 : 5 and 7 : 4. In what ratio should they be mixed so that ratio in final mixture becomes 7 : 5?
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milk in 1st = 6/11
milk in 2nd = 7/11
milk in new mixture = 7/12
by mixture and allegations,
ratio of milk1 = 7/12 - 6/11 = (77 - 72)/132 = 5/132
ratio of milk2 = 7/11 - 7/12 = (84 - 77)/132 = 7/132
required ratio
5/132 : 7/132
= 5 : 7
milk in 2nd = 7/11
milk in new mixture = 7/12
by mixture and allegations,
ratio of milk1 = 7/12 - 6/11 = (77 - 72)/132 = 5/132
ratio of milk2 = 7/11 - 7/12 = (84 - 77)/132 = 7/132
required ratio
5/132 : 7/132
= 5 : 7
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