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?
3 : 7
5 : 7
7 : 3
7 : 5
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.

Sweta said:   8 years ago
3.50:1.50 <=> 350:150 remove decimals and then write ratio after solving you get 7:3.

Smita said:   5 years ago
How is possible in 7:3?

I mean 20-16.50 = 4.50. So how its 3.50? Please explain.
(7)

Pooja said:   1 decade ago
=3.50/100= 0.035.
& 1.50/100 = 0.015.

How 3.50/100 = 35., 1.50/100 = 15.?

San said:   1 decade ago
If we swap 15 and 20 places.

Why can't it be 3:7 ? is there any rule?

Vishnu said:   9 years ago
I don't understand what is mean price. Please someone help me.

Anil said:   9 years ago
@Priyanka, it is allegation formula in a pictorial way.

Dinaz Khan said:   10 years ago
I don't understand the answer please explain clearly.

Indu said:   6 years ago
3.50/100 : 1.5/100 = 350/100 : 150/100 = 7:3.
(6)

Priyanka said:   9 years ago
I didn't get this, Please explain it again.

Suraj said:   8 years ago
20x+15(1-x) = 16.5.
x = 0.3.
1-x/x = 7/3.


Post your comments here:

Your comments will be displayed after verification.