What is the ratio x : y: z?

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What is the ratio x : y: z?

by Vincen » Tue Feb 13, 2018 3:51 am
What is the ratio x : y: z?

(1) x + y = 2 z
(2) 2x + 3y = z

The OA is the option E.

This questions about ratio are difficult to me. Can you give me some help here experts? I'd be thankful.
Source: — Data Sufficiency |