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.
Abinash said:
9 years ago
If a and b incomes are in the ratio 9:4. Their expenditure are 8:3. Each saves rs 2500. Then expenditure of b?
Please tell me the answer for this.
Please tell me the answer for this.
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
Ganapathy said:
2 decades 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
(2)
Kavinraj said:
1 decade ago
Hi.
my explanation is, assume your 3rd num is 10,
20%of 10=2 so 1st no is 12.
50%of 10=5, so 2nd no is 15.
So ratio of 12:15 = 4:5.
my explanation is, assume your 3rd num is 10,
20%of 10=2 so 1st no is 12.
50%of 10=5, so 2nd no is 15.
So ratio of 12:15 = 4:5.
Svs said:
1 decade ago
Hi, I really confuse.
Please clear my doubt.
Which is correct answer? Please tell.
@Sathya said 2:5.
Anyone tell correct answer?
Please clear my doubt.
Which is correct answer? Please tell.
@Sathya said 2:5.
Anyone tell correct answer?
Rosh said:
1 decade ago
Let 3rd no be x then.
(x+120/100):(x+150/100).
Take LCM 100 gets cancelled.
100x+120 = 100x+150.
We get 120 = 150.
So 4 : 5.
(x+120/100):(x+150/100).
Take LCM 100 gets cancelled.
100x+120 = 100x+150.
We get 120 = 150.
So 4 : 5.
Enigma said:
1 decade ago
How can one add a costant n a variable?
dats wrong..!
its simply..
x=20/100*z+z
y=50/100*z +z
if z is taken as the third no.. :)
dats wrong..!
its simply..
x=20/100*z+z
y=50/100*z +z
if z is taken as the third no.. :)
Shafai Rizvi said:
9 years ago
@Harshitta.
It is 1.2 and 1.5 (not 1.15).
So now simplify it,
= 1.2/1.5 (points cancel out).
= 12/15 (cancel out by 3).
= 4/5.
It is 1.2 and 1.5 (not 1.15).
So now simplify it,
= 1.2/1.5 (points cancel out).
= 12/15 (cancel out by 3).
= 4/5.
Anomie said:
7 years ago
@All who have a doubt that why does 100 only comes in place of x.
It is so because percentage is always 100. Therefore x = 100.
It is so because percentage is always 100. Therefore x = 100.
(1)
Maha said:
9 years ago
Lets us take c value as 100 then a value is 20% more.
So, c becomes 120
Similarly, b becomes 150 then, 120 : 150 becomes 4:5.
So, c becomes 120
Similarly, b becomes 150 then, 120 : 150 becomes 4:5.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers