Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 15)
15.
In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?
Answer: Option
Explanation:
Let the number of 25 p, 10 p and 5 p coins be x, 2x, 3x respectively.
| Then, sum of their values = Rs. |  |
25x | + | 10 x 2x | + | 5 x 3x |  |
= Rs. | 60x |
| 100 | 100 | 100 | 100 |
 |
60x | = 30 |  x = |
30 x 100 | = 50. |
| 100 | 60 |
Hence, the number of 5 p coins = (3 x 50) = 150.
Discussion:
117 comments Page 2 of 12.
Omkar shinde said:
4 years ago
Please help me to understand this.
(6)
Archit said:
5 years ago
@Tomoriba
How did you got 3/6*300 p =150,
It should be 3/6*3000p =150,
Here you multiplied 30 * 10 p which is wrong.
Shouldn't we multiply 30*1000?
How did you got 3/6*300 p =150,
It should be 3/6*3000p =150,
Here you multiplied 30 * 10 p which is wrong.
Shouldn't we multiply 30*1000?
Tomoriba Shira said:
5 years ago
Given ratios 1 : 2 : 3.
Therefore 3/6 * 300p = 150,
Here 6 we get by adding all ratios i.e( 1 + 2 + 3).
Therefore 3/6 * 300p = 150,
Here 6 we get by adding all ratios i.e( 1 + 2 + 3).
Shyam Sundar said:
5 years ago
1/4*x + 1/5*x+3/20*x =30.
12x=30*20,
12x=600,
X=600/12=50,
No of 5p = 3(50) = 150.
12x=30*20,
12x=600,
X=600/12=50,
No of 5p = 3(50) = 150.
Rahul said:
5 years ago
@Yhtsawakeviv.
Can you explain why 3 is multiplied here?
i.e No of 5p coins = 3x = 3*50 = 150.
Can you explain why 3 is multiplied here?
i.e No of 5p coins = 3x = 3*50 = 150.
Yhtsawakeviv said:
5 years ago
We can simply write;
1/4x + 1/10 * 2x + 1/20 * 3x = 30
Then after multiplying and taking LCM.
5x + 4x + 3x = 30 * 20,
x = 600/12,
x = 50.
So, No. of 5p coins = 3x = 3*50 = 150.
1/4x + 1/10 * 2x + 1/20 * 3x = 30
Then after multiplying and taking LCM.
5x + 4x + 3x = 30 * 20,
x = 600/12,
x = 50.
So, No. of 5p coins = 3x = 3*50 = 150.
(1)
Samiran biswas said:
5 years ago
1/4:2/10:3/20
5:4:3
Then ,
The Questions asked that, find the value in coins of 5 paise
(3/12)*30.
=15/2 in ripped.
And in coins 15/2*20= 150 is the answer.
5:4:3
Then ,
The Questions asked that, find the value in coins of 5 paise
(3/12)*30.
=15/2 in ripped.
And in coins 15/2*20= 150 is the answer.
Sandhiya said:
5 years ago
First convert 30rs to paise , ie 3000p.
Now, 25p:10p:5p = 1:2:3.
And given that, their sum is 3000p.
So, 25x + 10(2x) + 5(3x) = 3000 paise
60x = 3000
x=50.
So the value of 5p is 5*3*50 = 750.
But they asked No. Of 5p coins so, -> 750/5 = 150.
Now, 25p:10p:5p = 1:2:3.
And given that, their sum is 3000p.
So, 25x + 10(2x) + 5(3x) = 3000 paise
60x = 3000
x=50.
So the value of 5p is 5*3*50 = 750.
But they asked No. Of 5p coins so, -> 750/5 = 150.
(3)
Sahana said:
5 years ago
Why they are equated to 30?
In problem, it is given that 30 rs in all, hence it would be equated to 90, right?
In problem, it is given that 30 rs in all, hence it would be equated to 90, right?
MANU said:
6 years ago
Ratio in amount in paisa 25:20:15.
No.of 5 paisa coins = (15x3000)/(60x5).
= 150 coins.
No.of 5 paisa coins = (15x3000)/(60x5).
= 150 coins.
(1)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers