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 4 of 12.
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.
Rajesh meena said:
1 decade ago
Totally we have Rs.30 = 3000p.
25p, 10p, 5p are in ratio of 1:2:3 .
We can also write it as,
Coins of 25p = x.
Coins of 10p = 2x.
Coins of 5p = 3x.
25(x)+10(2x)+5(3x) = 3000.
x = 50.
No. of coins of 5p = 3*50 = 150.
25p, 10p, 5p are in ratio of 1:2:3 .
We can also write it as,
Coins of 25p = x.
Coins of 10p = 2x.
Coins of 5p = 3x.
25(x)+10(2x)+5(3x) = 3000.
x = 50.
No. of coins of 5p = 3*50 = 150.
Meghana said:
1 decade ago
Can we solve this way.
There is 1 25 paisa, 2 10 paisa, 3 15 paisa.
That means 25:20:15.
25+20+15 = 60.
For 60ps........ 30
100...... ?
100*30/60 = 50
Total coins is 50 then no of 5ps coins = 3*50 = 150.
There is 1 25 paisa, 2 10 paisa, 3 15 paisa.
That means 25:20:15.
25+20+15 = 60.
For 60ps........ 30
100...... ?
100*30/60 = 50
Total coins is 50 then no of 5ps coins = 3*50 = 150.
Nitesh said:
1 decade ago
@ Nithyanantham.
Totally wrong, what you think it is not matter, matter is that what is written in question paper and another thing is that I've not seen this technique in mathematics may be this is advanced technique.
Totally wrong, what you think it is not matter, matter is that what is written in question paper and another thing is that I've not seen this technique in mathematics may be this is advanced technique.
Gopinathan said:
8 years ago
In a row coins like this,
1------- 2.-------3
25p x 1-------10p x 2-------5p x 3.
For one row 60 p.
Re 1. = 100 p,
Rs.30= 3000 p,
Therefore. 3000/60 = 50 row.
per row 3 x 5p.
So answer is 50 x 3 =150 is correct.
1------- 2.-------3
25p x 1-------10p x 2-------5p x 3.
For one row 60 p.
Re 1. = 100 p,
Rs.30= 3000 p,
Therefore. 3000/60 = 50 row.
per row 3 x 5p.
So answer is 50 x 3 =150 is correct.
Srj said:
1 decade ago
Let the number of 25 p, 10 p and 5 p coins be x, 2x, 3x respectively.
25p of x,10p of 2x,5p of 3x;
25p=25/100=1/4;
10p=10/100=1/10;
5p=5/100=1/20;
1x/4 + 2x/10 + 3x/20=30;
5x+4x+3x=600;
12x=600 (3*50)
x=150
25p of x,10p of 2x,5p of 3x;
25p=25/100=1/4;
10p=10/100=1/10;
5p=5/100=1/20;
1x/4 + 2x/10 + 3x/20=30;
5x+4x+3x=600;
12x=600 (3*50)
x=150
Virender said:
8 years ago
I have a question, Please solve this.
A bag contains 50 paisas 20 paisas 10 paisas in ratio of 5:3:1 if the total amount in the bag is 640rs. Find the difference in the amounts contributed by 50 paisas and 20 paisas?
A bag contains 50 paisas 20 paisas 10 paisas in ratio of 5:3:1 if the total amount in the bag is 640rs. Find the difference in the amounts contributed by 50 paisas and 20 paisas?
Pooja said:
8 years ago
A bag contains Rs 5 coins, Rs 2 coins with total amount number of coins being 52, and the total amount is 125. The number of five rupees and two rupee coins are 37. The number of Rs 5coins are?
Can anyone answer it?
Can anyone answer it?
Bratish said:
7 years ago
25 paisa=1/4 rupee.
10 paisa=1/10 rupee.
5 paisa=1/20 rupee.
Assume that;
x/4:2x/10:3x/20.
then simplify ratio.
5x:4x:3x.
Then;
5x+4x+3x=30.
x=30/12;
So 3x rupees means
(30/12)*3=7.5;
and 5 paisa means
7.5*20=150.
10 paisa=1/10 rupee.
5 paisa=1/20 rupee.
Assume that;
x/4:2x/10:3x/20.
then simplify ratio.
5x:4x:3x.
Then;
5x+4x+3x=30.
x=30/12;
So 3x rupees means
(30/12)*3=7.5;
and 5 paisa means
7.5*20=150.
(1)
Maljol vaiphei said:
1 decade ago
30 rupees = 300 paise.
Now,
Rupee ratio = sum of ratios.
5p/Rupee = ratio of 5p/rupee ratio.
Rupee ratio is 6 since 1+2+3=6.
(Number of 5p)5p/300(total number of rupee) = 3/6(total ratio).
5p = 300*3/6 = 150.
Now,
Rupee ratio = sum of ratios.
5p/Rupee = ratio of 5p/rupee ratio.
Rupee ratio is 6 since 1+2+3=6.
(Number of 5p)5p/300(total number of rupee) = 3/6(total ratio).
5p = 300*3/6 = 150.
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