In what ratio must water be mixed with milk to gain 20% on selling the mixture at cost price?

Options
- 1:5
- 1:6
- 1:7
- 1:8

CORRECT ANSWER : 1:5

Discussion Board
Maths.allegation and mixture

No proper explanation??

Ammu 04-22-2017 03:59 AM

Answer:

let cp of 1 litre milk=1
cp of 1 litre water=0
then sp of 1 litre mixture=1
now the cp of 1 litre mixture(mean price) =100/120*1=5/6
now apply the rule of alligation to find the ratio.
ans:1:5

olive 07-13-2015 07:57 AM

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