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 8 of 14.
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.
Harshitta said:
10 years ago
How to calculate to 1.2 and 1.15? How to get answer 4 = 5? I can't understand.
Ramanan said:
10 years ago
Let the third number be x given that:
x+20% : x+50%.
x+0.2 : x+0.5.
(we know x is '1x').
So, 1x+0.2 : 1x+0.5.
= 1.2x : 1.5x.
(To remove decimal points we are multiply in both sides by 10).
= 1.2x*10 : 1.5x*10.
= 12x : 15x.
By simplifying,
= 4 : 5.
(x will get cancelled when 12x/15x).
x+20% : x+50%.
x+0.2 : x+0.5.
(we know x is '1x').
So, 1x+0.2 : 1x+0.5.
= 1.2x : 1.5x.
(To remove decimal points we are multiply in both sides by 10).
= 1.2x*10 : 1.5x*10.
= 12x : 15x.
By simplifying,
= 4 : 5.
(x will get cancelled when 12x/15x).
LOKESH ANAND said:
10 years ago
Let third number is 100.
Than 20% of third = 20 & 50% of third 50.
Than first number = 120(100+20).
Then second number = 150(100+50).
By question, Ratio of two number = First number:Second number.
= 120:150 = 4:5.
Than 20% of third = 20 & 50% of third 50.
Than first number = 120(100+20).
Then second number = 150(100+50).
By question, Ratio of two number = First number:Second number.
= 120:150 = 4:5.
Chex said:
10 years ago
Let x be the third value, hence.
20% of x = x+(20/100*x) = x+(x/5) = 6x/5.
50% of x = x+(50/100*x) = x+(x/2) = 3x/2.
Now ration is,
(6x/5)/(3x/2) = 12x/15x = 4/5.
20% of x = x+(20/100*x) = x+(x/5) = 6x/5.
50% of x = x+(50/100*x) = x+(x/2) = 3x/2.
Now ration is,
(6x/5)/(3x/2) = 12x/15x = 4/5.
Manas said:
10 years ago
Out of three number, the first number and the second number are respectively 25% and 30% less then the third number. By what percentage is the second number less then the first?
Can any one solve the problem? Then please.
Can any one solve the problem? Then please.
Vamshi said:
1 decade ago
Let the third number be x = 100.
The first number is 20% more than third number so 100+20% = 120.
The second number is 50% more than third number so 100+50% = 150.
= 120:150 = 4:5.
The first number is 20% more than third number so 100+20% = 120.
The second number is 50% more than third number so 100+50% = 150.
= 120:150 = 4:5.
Usha said:
1 decade ago
Hey anyone can explain what is meaning by third number and how its became 20% to convert 120 and 150 please explain guys.
Parikshit said:
1 decade ago
Question says that two numbers are 20% and 50% MORE THAN third no then it should be like this:
No third no = X.
No A = 120*X/100+X.
B = 150*X/100+X.
But it gives 22:25.
No third no = X.
No A = 120*X/100+X.
B = 150*X/100+X.
But it gives 22:25.
Santosh said:
1 decade ago
Somebody let me know What is the ratio and what is the implementation of this?
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