Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 1)

Ratio and Proportion

A and B together have Rs. 1210. If

of A's amount is equal to

of B's amount, how much amount does B have?

Rs. 460

Rs. 484

Rs. 550

Rs. 664

Answer: Option

Explanation:

	4	A	=	2	B
	15			5

A =		2	x	15	B
		5		4

A =	3	B
	2

	A	=	3
	B		2

A : B = 3 : 2.

B's share = Rs.		1210 x	2		= Rs. 484.
			5

Discussion:

162 comments Page 6 of 17.

Swapnil said: 1 decade ago

But I still don't understand why we first calculate the ratio, final answer depend on the formula.

(1)

Divya said: 1 decade ago

A=4/5, B=2/5.

Total amount=1210.
Therefore the total amount of B=1210*2/5=484.

So, Ans is 484.

Keddy said: 1 decade ago

Its interesting but is there any logic or short trick 2 solve this question in few second?

Jyoti said: 4 years ago

Listen @Yogesh.

Take A=3x and B=2x.
5x= 1210 => x= 242.
Then B= 2 * 242= 484 Ans.

(26)

Brajesh said: 1 decade ago

Through ratio share can be divided accordingly as A:B=3:2 B' SHARE will be 2/5*1210=484.

Goutham said: 1 decade ago

Please explain me clearly a4/15 and b2/5 how will 3/2 came please I'm not getting this.

Kiran said: 2 years ago

Why should we have to find a : b?

Here we can directly multiply the 2/5*1210. Right?

(113)

Mayank Mathur said: 1 decade ago

If there is simply multiplication then what is the need of 3:2.

Why we solved it?

Meena said: 8 years ago

If a:b=2:3 b:c=4:5,c:d=6:7 then a:b:c:d is?

Anyone help me to solve this problem?

Dev said: 1 decade ago

Yeah, Sridhar you have made this really comprehensive. And Thanks to Bhuvi also.

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