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Question

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If1x:1y:1z=2:3:5, then, x : y : z = ?

(a) 2 : 3 : 5
(b) 15 : 10 : 6
(c) 5 : 3 : 2
(d) 6 : 10 : 15

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Solution

(b) 15 : 10 : 6

1x :1y=2 : 3Then, y : x = 2 : 3 and y = 23x1y:1z = 3 : 5Then, z : y =3 : 5 and z = 35y x : y : z = x : 23x : 35y = x : 23x: 35×23x =x : 23x : 25x = 15 : 10 : 6

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