SSC Government Jobs Exams Numerical Ability Ratio and Proportion

If A : B = 2 : 3, B : C = 4 : 5 and C : D = 5 : 9, then A : D is equal to

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Three spherical balls of radius 1cm, 2cm and 3cm are melted to form a single spherical ball. In the process, the loss of material is 25%. The radius of the new ball is If the length of a rectangle is increased in the ratio 6 : 7 and its breadth is diminished in the ratio 5 : 4 then its area will be diminished in the ratio