Algebra Q#3

76The correct ascending order of magnitude, if the ratios 1 : 2 , 2 : 5 and 3: 4 is

Option : A
Explanation : Given, ratios are 1/2, 2/5 and 3/4. ∴ LCM(2,5, 4) = 20 ⇒ 1/2 = 1/2 × 10/10 = 10/20, 2/5 = 2/5 × 4/4 = 8/20 and 3/4 = 3/4 × 5/5 = 15/20. Clearly, 8/20<10/20<15/20 =2/5<1/2<3/4. so, 2:5<1:2<3:4

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