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 6 of 12.
Shivshankar said:
1 decade ago
Confirm first whether the ratio is in the terms no.of coins or in terms of rupees.
Chakradhar behera said:
1 decade ago
Rs.100 in a bag, to calculate any way in which to get 50 coin (except Rs.2).
Bhavani said:
1 decade ago
I can't able to understand the right method. Please any body tell the right way.
Vinodh said:
1 decade ago
Answer is 300:
Bag contains 30 Rupees.
Given the ratio 1:2:3.
1) 25paise - (1/6)*30 = 5 Rupees.
2) 10p - (2/6)*30 = 10 Rupees.
3) 5p - (3/6)*30 = 15 Rupees.
There are 20 no: of 5 Paise in a Rupee Therefore there will be 300 nos of 5 Paise in 15 rupees.
Bag contains 30 Rupees.
Given the ratio 1:2:3.
1) 25paise - (1/6)*30 = 5 Rupees.
2) 10p - (2/6)*30 = 10 Rupees.
3) 5p - (3/6)*30 = 15 Rupees.
There are 20 no: of 5 Paise in a Rupee Therefore there will be 300 nos of 5 Paise in 15 rupees.
M.R said:
1 decade ago
Which is divided by 30 or multiplied number?
Issahaku said:
1 decade ago
In-fact I just went though various solutions to the problem. My question now is, is 300 or 150 the answer? We are confused which is which. So any further explanation?
Agrima said:
1 decade ago
Why we have taken 25 and not 125?
Vijay said:
1 decade ago
Let x is the number of 25 paisa coins then 2x and 3x will be for 10 and 5 paisa coins.
Now 30 rupees equal to 30*100 paisa now total paisa equal to x*25+2x*10+3x*5=3000.
60x = 3000.
x = 50.
Now number 5 paisa coin is 3x equal to 3*50 = 150.
Now 30 rupees equal to 30*100 paisa now total paisa equal to x*25+2x*10+3x*5=3000.
60x = 3000.
x = 50.
Now number 5 paisa coin is 3x equal to 3*50 = 150.
Shivani Dixit said:
1 decade ago
The biggest confusion here is because of value of coins and number of coins. Now the ratio 1:2:3 given is the number of coins where as 25p 10p and 5p are the value of coins.
Thus,
Value: 25p 10p 5p.
Number of coins: 1*x 2*x 3*x.
Total value: 25x 20x 15x.
Given, 25x+20x+15x=30*100 (rs. 30 converted into paisa).
60x = 3000.
x = 50.
Therefore, number of coins is 3*x.
3*50 = 150.
Thus,
Value: 25p 10p 5p.
Number of coins: 1*x 2*x 3*x.
Total value: 25x 20x 15x.
Given, 25x+20x+15x=30*100 (rs. 30 converted into paisa).
60x = 3000.
x = 50.
Therefore, number of coins is 3*x.
3*50 = 150.
Anshu said:
1 decade ago
Give the right answer anyone 300 or 150?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers