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If a : b = 7 : 2, find the ratios (i) b : a (ii) a + b / b . |
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Answer» (i) a : b = 7 : 2 ∴ b : a = 2 : 7 .......... invertendo (ii) a / b = 7 / 2 ∴ a+b / b = 7+2 / 2 =9/2 .......... componendo |
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