Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 2)

Ratio and Proportion

Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:

2 : 5

3 : 5

4 : 5

6 : 7

Answer: Option

Explanation:

Let the third number be x.

Then, first number = 120% of x =	120x	=	6x
	100		5

Second number = 150% of x =	150x	=	3x
	100		2

Ratio of first two numbers =		6x	:	3x		= 12x : 15x = 4 : 5.
		5		2

Discussion:

118 comments Page 2 of 12.

Surya said: 2 years ago

Thanks for explaining @Ganapathy.

Sravan said: 2 years ago

Here, Why should we consider 100? Please explain.

Simran said: 3 years ago

Let c is 1,
then,
first = 1 + 0.20*1,
second = 1 + 0.50*1,
ratio = 4:5.

Shalini e said: 3 years ago

Thank you all for explaining the concept.

N.PRASANTH said: 3 years ago

120/100:150/100
= 120:150,
= 12:15,
= 4:5.

(3)

Morepankh said: 3 years ago

ATP,

1st no., Is 20% more than 3rd no.
Let 3rd no., be x;

Then, 1st no.,=(20/100)*x+x.
2nd no.,=(50/100)*x+x.
Finally,
1st = 120x/100.
2nd = 150x/100.
3rd = x.

Ratio required = 120x/100:150x/100.
= 4:5.

Ayushi said: 3 years ago

Thanks @Ali.

Preetam paul said: 3 years ago

How come 120 percent? Please explain.

SHAIK MANSOOR said: 3 years ago

They said comparing both 1st & 2nd third parts is less and it is Percentage. So For third part take it as 100%.

Then for 1st part 120% & 2nd part 150%.
Then 120% : 150% : 100%. Then the answers is 4:5.

Ugyen Dema said: 3 years ago

I am getting 2:5. Please anyone explain the answer clearly.

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