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:
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 5 of 14.
Sumit said:
1 decade ago
Let it be of 100. It is most convennience.
Sathi said:
1 decade ago
Take A,B,C as three numbers
A is 20% more than C
A=C+20%of C=C+0.2C=1.2C
same way
B=C+50%of(C)=C+0.5C=1.5C
ratio A/B=1.2C/1.5C=4/5
Ans 4/5
A is 20% more than C
A=C+20%of C=C+0.2C=1.2C
same way
B=C+50%of(C)=C+0.5C=1.5C
ratio A/B=1.2C/1.5C=4/5
Ans 4/5
Sruthi said:
1 decade ago
Sathi's concept is right.
Haseeb Siddiqi said:
1 decade ago
Ramesh's method is good and easy.
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 .
Kunal said:
1 decade ago
Why take third number as 100?
Priyabrata Muduli said:
1 decade ago
Sathi's concept is right.
Manimekalai.v said:
1 decade ago
Ganapathy method is good.
Abhishek said:
1 decade ago
I took x:x+20:x+50
then i assumed x+(x+20)+(x+50)=100
3x+70=100
x=10
hence the ration is 30/60
1/2
where did i go wrong?
then i assumed x+(x+20)+(x+50)=100
3x+70=100
x=10
hence the ration is 30/60
1/2
where did i go wrong?
Sandeep said:
1 decade ago
Some one explain why it is 100?
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