Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 2)
2.
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:
134 comments Page 7 of 14.

SHEETAL said:   2 decades ago
Suppose the 3rd no is X.
so 1st no will be X*1.2.
&2nd no will be X*1.5.
so the ratio is 1.2:1.5,
Hence 4:5
(1)

Naveen said:   1 decade ago
Take 10 and 20% more than 10 is 12 and 50% more than 10 is 15 so the ratio is 12:15 which is nothing but 4:5 .

Divya said:   4 years ago
@All.

Here,

First and second numbers 20% and 50% more that means 120:150 simply this we will get 4:5.
(24)

Abhinav said:   1 decade ago
Let number = x, y, z.

Then, x = 20% of z + z = 6z/5.

y = 50% of z + z = 3z/2.

Ratio is x/y = 4/5.

Cik_nani said:   9 years ago
How do you get 120/100? And how do you get the answer 6 over 5? I'm confused. Please clarify me.

Sushant pal said:   7 years ago
a : b:

20%:50%
20/100 = 2/5
50/100 = 1/2
a:b :: c:d.
2:5 :: 1:2.
= answer 5:4 or 5/4.

B.lingaswamyyadav said:   1 decade ago
Let the third number will taken as 100.

= 120/100 = 150/100 = 12 = 15.

= 4 = 5.

Santosh said:   1 decade ago
Somebody let me know What is the ratio and what is the implementation of this?

Harshitta said:   10 years ago
How to calculate to 1.2 and 1.15? How to get answer 4 = 5? I can't understand.

Sathya said:   1 decade ago
Let 3rd no is x
20%of x=(20/100)*x
50%of x=(50/100)*x
1/5x:1/2x
ans=2:5


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