Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 9)

Ratio and Proportion

The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:

Answer: Option

Explanation:

Let the three parts be A, B, C. Then,

A : B = 2 : 3 and B : C = 5 : 8 =		5 x	3		:		8 x	3		= 3 :	24
			5					5			5

A : B : C = 2 : 3 :	24	= 10 : 15 : 24
	5

B =		98 x	15		= 30.
			49

Discussion:

122 comments Page 8 of 13.

Sangamesh Angadi said: 7 years ago

Simply,

A:B=2:3 B:C=5:8.
Then A:B:C = 10 :15 :24.
so, 15 * 98/29.

It will come 30.

Rashmi said: 9 years ago

@Rajkumar.

Thanks for giving the best and the most simple way to solve this question.

Aisha said: 8 years ago

The sum of two numbers is 75 and their ratio is 3:2. Find the numbers. Please solve.

Shubham said: 9 years ago

@Anjali Sharma.

Please explain this,

98 * 15/49, from where this 49 come?

Ramesh said: 4 years ago

A : B : C.

2:3
---5: 8
2 * 5:3 * 5:3 * 8.

10:15:24
(15 * 98)/49 = 30.

(3)

Niraj Hazarika said: 5 years ago

A/B = 2/3 and B/C = 5/8.
But B = 3 also,
So, 3/C = 5/8 => C=24/5.

(2)

Deepi said: 1 decade ago

SEE This carefully
a:b1
- b2:c
-----------
a*b2:b1*b2:b1*c=a:b:c

Mukesh said: 1 decade ago

How do we take 3:5 and why.

Explain how 8*3/5 came ? and why.

Sehrish Saleem said: 8 years ago

3+2= 5
75/5= 15
15*3= 45
15*2= 30
45+30=75
45:30 is numbers.

Sana said: 1 decade ago

Kalpa and Abhishek gave best n easy methods, thank you :).

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