# QA – Placement Quizzes | Mixtures and Alligation | Question 6

There are two drums of vanaspati gee. One of them contains 25% of oil (and rest 75% gee) and the another contains 50% oil (and rest 50% gee). How much vanaspati gee (approx) should one mix from each of the drum so as to get twelve litres of vanaspati gee such that the ratio of gee to oil is 5 : 2?

**(A)** 10

**(B)** 15

**(C)** 10.28

**(D)** 9.57

**Answer:** **(C)** **Explanation:** Let x litrs from 1^{st} drum and 12-x litrs from 2^{nd} drum are mixed

gee from 1^{st} drum = .75x

oil from 1^{st} drum = .25x

gee from 2^{nd} drum = .5(12-x)

oil from 2^{nd} drum = .5(12-x)

total gee = .25x+6

total oil = .25x+.5(12-x) = 6-.25x

ratio => (.25x+6)/(6-.25x) =5/2

0.50x+12 = 30-1.250x

1.75x= 18

x = 10.28 liters

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