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:

161 comments Page 1 of 17.

Gauri said: 1 decade ago

Is it necessary to find ratio of A and B? Can we find share of B directly?.

(1)

Anji said: 1 decade ago

How you will find B's share directly, tell me?

(1)

Sridhar said: 1 decade ago

A+B=1210

(4/15)A=(2/5)B

2A=3B

Therefore, A=(3B)/2

and substituting, (3B/2)+B=1210

and hence, 5B=2420 => B=484 Rs.

(4)

Nitesh Nandwana said: 1 decade ago

@Hi Gauri

Don't confuse about 2/5 it isn't that which is in question statement while it is (A:B=3:2 so B's =2/5)

Venkatraman said: 1 decade ago

@Sridhar

Thank you :)

Regha said: 1 decade ago

I cant understand B s Share Rs (1210*2/5).

A;3;2, why we wand to find reply?

Bhuvi said: 1 decade ago

Hey rekha,
It is nothing.They used the formula
To find a=total amt given*(a ratio/a+b ratio)
To find b=total amt given*(b ratio/a+b ratio)

Bobby said: 1 decade ago

Thanks Sridhar.

Anil said: 1 decade ago

4/15*(1210-B)=2/5*B
=>5B=2*1210
=>B=2*1210/5
=>B=484

(1)

Rath said: 1 decade ago

Thanks bhuvi. Now I understand.

(1)

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