Mixture and Alligation · UPSC CDS/OTA · Question 13 of 30

Mixture and Alligation – Question 13

Step-by-step solution. Mixture and Alligation for UPSC CDS/OTA.

Topic
Mixture and Alligation
Subject
Mathematics
Difficulty
Medium
Solve Time
45–60 sec

Solved UPSC CDS/OTA Question

A solved UPSC CDS/OTA PYQ — decoded step-by-step.

Solve it the standard way once — then learn the shortcut.

Q · Mixture and AlligationMedium · 45s

Two vessels contain spirit and water mixed respectively in the ratio of 1 : 4 and 4 : 1. Find the ratio in which these are to be mixed to get a new mixture in which the ratio of spirit to water is 1 : 3 .

TopicMixture and Alligation
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min

Step-by-Step Solution

The complete worked solution.

Every step explained — no skipped algebra.

Solution illustration 1
Final Answer: Option D — 11 : 3
Solve Question✦ Build Plan
Mixture and Alligation Question 13 – UPSC CDS/OTA