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:
118 comments Page 12 of 12.
SUGANYA.P said:
1 decade ago
I do know understand this concepts please explain.
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
20%of x=(20/100)*x
50%of x=(50/100)*x
1/5x:1/2x
ans=2:5
Sridhar said:
1 decade ago
Why should take the value of third no is 100 only? why not 60, 70, 80.
Ramesh said:
1 decade ago
Dear xyz, it is not 20% and 50%, but it is 20% and 50% MORE THAN third number.
If third no is 100, it is 120 and 150
So, 120 : 150
12: 15 or
4:5
If third no is 100, it is 120 and 150
So, 120 : 150
12: 15 or
4:5
Xyz said:
1 decade ago
20%=1/5
50%=1/2
So ratio should be equal to 1/5:1/2
Ans= 2:5 ?
50%=1/2
So ratio should be equal to 1/5:1/2
Ans= 2:5 ?
(1)
Ramesh said:
1 decade ago
120/100 : 150/100
120:150
12:15
4:5
120:150
12:15
4:5
SHEETAL said:
1 decade 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
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)
Ganapathy said:
1 decade ago
Let third no be 100.
the first no is 20% more than third so 120
similarly
second no is 50% more than third so 150
just compare
120:150
4:5
the first no is 20% more than third so 120
similarly
second no is 50% more than third so 150
just compare
120:150
4:5
(1)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers