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 11 of 12.
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.
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)
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.
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.
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).
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?
Omkar shinde said:
4 years ago
Please help me to understand this.
(6)
Reena said:
4 years ago
30 Rs = 3000 PAISE.
25X + 20 X+ 15 X=3000,
60X = 3000,
X =50,
3(50) = 150.
25X + 20 X+ 15 X=3000,
60X = 3000,
X =50,
3(50) = 150.
(26)
Bhuvi said:
4 years ago
I think it's simple because see the question what they ask how many 5p coins?
i.e 25p, 10p, 5p the ratio 1:2:3 the cost is 30rps so we can easily solve this. 5*30 =150.
i.e 25p, 10p, 5p the ratio 1:2:3 the cost is 30rps so we can easily solve this. 5*30 =150.
(16)
Ganesh said:
4 years ago
We convert 30Rs into paisa = 3000paisa .
Given= 25p,10p and 15p.
Given ratio 1:2:3.
So we 25 * 1x+10 * 2x+15 * 3x = 3000.
60x =3000.
X=50.
Therefore.
3*50 =150.
It's right one.
Given= 25p,10p and 15p.
Given ratio 1:2:3.
So we 25 * 1x+10 * 2x+15 * 3x = 3000.
60x =3000.
X=50.
Therefore.
3*50 =150.
It's right one.
(51)
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