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.
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.
Kapya said:
1 decade ago
I need an explanation for this oners 107.25 is made up of rupee, 50 paise and 25 paise coins and the number of coins are in the proportion 5, 6, 7 then the number of copies is?
Vikas sharma said:
1 decade ago
@depanshu shortcut is correct and it is the shortest method
Totally we have Rs.30 = 3000p.
25p,10p, 5p are in ratio of 1:2:3 (given).
We can also write it as
No. of coins of 25p = x
No. of coins of 10p = 2x
No. of coins of 5p = 3x
Then,
25(x)+10(2x)+5(3x)= 3000
We will find x = 50.
No. of coins of 5p = 3*50 = 150.
Totally we have Rs.30 = 3000p.
25p,10p, 5p are in ratio of 1:2:3 (given).
We can also write it as
No. of coins of 25p = x
No. of coins of 10p = 2x
No. of coins of 5p = 3x
Then,
25(x)+10(2x)+5(3x)= 3000
We will find x = 50.
No. of coins of 5p = 3*50 = 150.
(1)
Chetan said:
1 decade ago
Any short cut?
Chaitanya said:
1 decade ago
The main thing here is to convert the given data I to one standard. I mean its given as paisa so entire problem should be converted to paisa.
Bala said:
1 decade ago
Seventy two coins consist of one rupee coins, 50 paise coins and 25 paise coins, their values being in the ratio 10:15:8. Find the number of 50 paise coins.
Any one can help on this to solve?
Any one can help on this to solve?
Deepi said:
1 decade ago
I like Divyanshu method. Thank you.
Ankur said:
1 decade ago
30/6 *3= 15
15*10 =150
15*10 =150
Sweetie said:
1 decade ago
How did you get 3*50?
Divyanshu said:
1 decade ago
Its Simple
Totally we have Rs.30 = 3000p
25p,10p, 5p are in ratio of 1:2:3 (given)
We can also write it as
No. of coins of 25p = x
No. of coins of 10p = 2x
No. of coins of 5p = 3x
then,
25(x)+10(2x)+5(3x)= 3000
we will find x = 50
No. of coins of 5p = 3*50 = 150
Totally we have Rs.30 = 3000p
25p,10p, 5p are in ratio of 1:2:3 (given)
We can also write it as
No. of coins of 25p = x
No. of coins of 10p = 2x
No. of coins of 5p = 3x
then,
25(x)+10(2x)+5(3x)= 3000
we will find x = 50
No. of coins of 5p = 3*50 = 150
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