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:
133 comments Page 10 of 14.
Narayana Rao Gartam said:
1 decade ago
Consider third number as 100, to do easy and better calculations.
Gaurav said:
1 decade ago
Confused guys. Please read the question carefully.
Its first and 2nd number is 20% and 50 % more than the third number.
Obviously that means that the third number should be 100% or you can take it as 100.
Its first and 2nd number is 20% and 50 % more than the third number.
Obviously that means that the third number should be 100% or you can take it as 100.
Mayank Mathur said:
1 decade ago
Given % is 20 & 50.
Let the 3rd no is 100.
Then for A = 20% more means number is 120.
Similarly for B number is 150.
Ratio 120: 150.
12:15.
4:5 (divide by 3 to both number ).
Let the 3rd no is 100.
Then for A = 20% more means number is 120.
Similarly for B number is 150.
Ratio 120: 150.
12:15.
4:5 (divide by 3 to both number ).
Giri said:
1 decade ago
Let x be 3rd number then,
1st number is 20% greater than 3rd number,so 1st number is equal to
x+(x*(20/100)).
x(1+(20/100)).
x((100+20)/100).
x*(120/100).
That why we will add 100 to given percentage to find increase in it.
1st number is 20% greater than 3rd number,so 1st number is equal to
x+(x*(20/100)).
x(1+(20/100)).
x((100+20)/100).
x*(120/100).
That why we will add 100 to given percentage to find increase in it.
Gok said:
1 decade ago
Please clearly say why you added 100 in 20% and 50%?
NAMAN said:
1 decade ago
Ratio is 1.2 : 1.5 : 1.
= 12 : 15 : 10.
= 4 : 5 : 1.
Hence 4 : 5.
= 12 : 15 : 10.
= 4 : 5 : 1.
Hence 4 : 5.
NISHANT RAJ said:
1 decade ago
Very simple method is:
Let assume that 3th number is = 100.
Then,
a/c to ques. A = 120.
B = 150.
Ratio of number A/B = 120/150.
= 4/5.
A:B = 4:5 (ANS. C).
Let assume that 3th number is = 100.
Then,
a/c to ques. A = 120.
B = 150.
Ratio of number A/B = 120/150.
= 4/5.
A:B = 4:5 (ANS. C).
Nive said:
1 decade ago
We know there are 3 numbers.
Think.,
1st one X.
2nd one Y.
3rd one Z.
Then assume that Z's value a.
Now X=a+20%.
Y=a+50%.
Put a=10.
Now we get X=12; Y=15.
So the ratio of X and Y is 4:5.
Think.,
1st one X.
2nd one Y.
3rd one Z.
Then assume that Z's value a.
Now X=a+20%.
Y=a+50%.
Put a=10.
Now we get X=12; Y=15.
So the ratio of X and Y is 4:5.
Hassan said:
1 decade ago
Suppose a number,
100____120.
100 ___150.
Hence the numbers are increasing by 20 and 50%
120 : 150.
12 : 15.
4 : 5.
100____120.
100 ___150.
Hence the numbers are increasing by 20 and 50%
120 : 150.
12 : 15.
4 : 5.
Hussain Ali said:
1 decade ago
Let A, B, C are three numbers.
A is 20% more than C.
So A become:
A= C+20%of C = C+0.2C = 1.2C.
B become:
B= C+50%of(C)= C+0.5C = 1.5C.
And ratio between A/B is:
1.2C/1.5C = 4/5.
Hence answer is:4/5.
A is 20% more than C.
So A become:
A= C+20%of C = C+0.2C = 1.2C.
B become:
B= C+50%of(C)= C+0.5C = 1.5C.
And ratio between A/B is:
1.2C/1.5C = 4/5.
Hence answer is:4/5.
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