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 9 of 12.
Jess said:
7 years ago
25:10:5= cancel by 5 you get 5:2:1.
Add 5+2+1=8 and add all the coins 25+10+5=40.
40/8=5.
5*30(30p given) =150.
Add 5+2+1=8 and add all the coins 25+10+5=40.
40/8=5.
5*30(30p given) =150.
Surya teja said:
7 years ago
x+2x+3x=300ps.
6x=300ps,
X=50ps.
Then 5ps coins=3*50,
=150.
6x=300ps,
X=50ps.
Then 5ps coins=3*50,
=150.
Sourabh Thakur said:
7 years ago
According to me;
By solving by N.R.V.
25p ------- 10p ------- 5p -------25p+10p+5p
n- 1 ------- 2 ------- 3
r- 1/1 ------- 1/2 ------- 1/3
v- 1 ------- 1 ------- 1 =>3*10=30.
So, the total no coin of 5p are 3*10=30.
By solving by N.R.V.
25p ------- 10p ------- 5p -------25p+10p+5p
n- 1 ------- 2 ------- 3
r- 1/1 ------- 1/2 ------- 1/3
v- 1 ------- 1 ------- 1 =>3*10=30.
So, the total no coin of 5p are 3*10=30.
Jalandhar said:
7 years ago
The coins are 25p, 10p, 5p.
So ratio of value among these coins is 25:10:5 = 5:2:1
The ratio of coins in the bag is 1:2:3,
Multiply both ratios.
1:2:3
5:2:1
= 5:4:3.
5p coins are = 3/12 * 30 = 7.5 rupees.
For 1 rupee 20 5p coins, then for 7.5 rupees 5p coins = 7.5*20=150.
So ratio of value among these coins is 25:10:5 = 5:2:1
The ratio of coins in the bag is 1:2:3,
Multiply both ratios.
1:2:3
5:2:1
= 5:4:3.
5p coins are = 3/12 * 30 = 7.5 rupees.
For 1 rupee 20 5p coins, then for 7.5 rupees 5p coins = 7.5*20=150.
Akash sahoo said:
7 years ago
25p 10p 5p
1 : 2 : 3
If 25p*1=25p
10p*2=20p
5p*3=15p.
60p --> 30
1 --> 30/0.60p=50 piece,
So, 3---------50*3 = 150pieces.
1 : 2 : 3
If 25p*1=25p
10p*2=20p
5p*3=15p.
60p --> 30
1 --> 30/0.60p=50 piece,
So, 3---------50*3 = 150pieces.
Ronie said:
7 years ago
The easiest way is to convert 30 to paisa i.e 3000p.
Now no of 5p coin is( 3/1+2+3)*3000,
=3/6*3000=150.
Now no of 5p coin is( 3/1+2+3)*3000,
=3/6*3000=150.
Janu said:
7 years ago
I can't understand. Please, anyone, help me to get this.
Mahaveer kumar said:
7 years ago
Thanks @Divyanshu.
Jenny said:
7 years ago
Thanks @Divyanshu your method is very easy.
But if you find the values for other 10 paise and 25 paise, the total amount Rs. 30 (given in the problem) is not matched with the final answer. Anyone can clear my doubt?
How to find the values for 10 paise and 25 paise? Please tell me.
But if you find the values for other 10 paise and 25 paise, the total amount Rs. 30 (given in the problem) is not matched with the final answer. Anyone can clear my doubt?
How to find the values for 10 paise and 25 paise? Please tell me.
Kalyani said:
7 years ago
Clear method, Thanks @Divyanshu.
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