Alligations or Mixtures
Aptitude

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Q.

In what ratio must rice at Rs 9.30 per Kg be mixed with rice at Rs 10.80 per Kg so that the mixture be worth Rs 10 per Kg?

 A.

6:5

 B.

8:7

 C.

3:7

 D.

6:1

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Solution:
Option(B) is correct

C.P of 1 Kg                   C.P of 1 Kg

rice of 1st                   rice of 2nd

kind (930p)                kind (1080p)

 

             \                        /
                Mean Price

                  (1000p)

             /                       \

 

   (1080 – 1000)  :        (1000 -  930)

             80                             70

Thus, required ratio = 80 : 70 = 8 : 7


(8) Comment(s)


Pravin
 ()

i didn't undrstandd.

how to find mean price.

plz help me



Karthick
 ()

no, i think the ratio is correct..its rice at Rs 9.30 per to rice at Rs 10.80 per Kg as mentioned in the question.
Reversing the ratio would get you incorect answer.



Vinod
 ()

I hope to the each and every member got the maximum aptitude knowledge



Keerthi
 ()

Every thing is good, but I can't understand how to calculate the mean price. In this problem, cost of the mixture is obtained by multiplying it with hundred $(10 \times 100). $

But, in some other problems, I could not get answer in that manner. Can any one please help me out?



Pradeep
 ()

Shouldn't it be the ratio of rice at Rs 10.80 per Kg to rice at Rs 9.30 per Kg instead of rice at Rs 9.30 per to rice at Rs 10.80 per Kg as mentioned in the question.

My query might seem confusing, I just want to ask if ratio to be found is correct or should we find the reverse ratio?


Sara
 ()

no, i think the ratio is correct..its rice at Rs 9.30 per to rice at Rs 10.80 per Kg as mentioned in the question.
Reversing the ratio would get you incorect answer.


Sammy
 ()

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Keep it up.

Hope you guys will keep updating the website.

All the best, keep up he good work. Smile


Nita
 ()

yeah...agreed! this site is really helpful..:)

Smile