Aptitude - Alligation or Mixture - Discussion
Discussion Forum : Alligation or Mixture - General Questions (Q.No. 5)
5.
In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 kg?
Answer: Option
Explanation:
By the rule of alligation:
| Cost of 1 kg pulses of 1st kind Cost of 1 kg pulses of 2nd kind | ||
| Rs. 15 | Mean Price Rs. 16.50 | Rs. 20 |
| 3.50 | 1.50 | |
Required rate = 3.50 : 1.50 = 7 : 3.
Discussion:
42 comments Page 3 of 5.
Sumanth geras said:
1 decade ago
15(x)+20(y)/x+y = 16.50.
(Here x and y are the ratios in which they are to be mixed).
Then 15x+20y = 16.50x+16.50y.
On simplifying we get x:y = 7:3.
(Here x and y are the ratios in which they are to be mixed).
Then 15x+20y = 16.50x+16.50y.
On simplifying we get x:y = 7:3.
(1)
Dinaz Khan said:
10 years ago
I don't understand the answer please explain clearly.
Codetackler said:
10 years ago
Let 15 is to be added in x amount.
Then 20 is to be added in (1-x).
Then, 15(x)+20(1-x) = 16.5.
Answer is (x/(1-x)).
Then 20 is to be added in (1-x).
Then, 15(x)+20(1-x) = 16.5.
Answer is (x/(1-x)).
Madhuri said:
9 years ago
Why can't be the answer is 3 : 7?
Priyanka said:
9 years ago
I didn't get this, Please explain it again.
Anil said:
9 years ago
@Priyanka, it is allegation formula in a pictorial way.
Vishnu said:
9 years ago
I don't understand what is mean price. Please someone help me.
Suraj said:
8 years ago
20x+15(1-x) = 16.5.
x = 0.3.
1-x/x = 7/3.
x = 0.3.
1-x/x = 7/3.
Navdeep said:
8 years ago
The mean price is a trick , this question is particularly based on it . as we see there is only one equation made i.e [15x + 20y = 16.5] other than this we cant make any equation.
My suggestion to solve these type of question where only one equation is made to put the value of options given.
As here only one option satisfies.
My suggestion to solve these type of question where only one equation is made to put the value of options given.
As here only one option satisfies.
(1)
Sweta said:
8 years ago
3.50:1.50 <=> 350:150 remove decimals and then write ratio after solving you get 7:3.
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