Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 4)
4.
Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
Answer: Option
Explanation:
Originally, let the number of seats for Mathematics, Physics and Biology be 5x, 7x and 8x respectively.
Number of increased seats are (140% of 5x), (150% of 7x) and (175% of 8x).
 |
 |
140 | x 5x |  |
, | |
150 | x 7x | |
and | |
175 | x 8x | |
| 100 | 100 | 100 |
| 7x, |
21x | and 14x. |
| 2 |
 The required ratio = 7x : |
21x | : 14x |
| 2 |
14x : 21x : 28x
2 : 3 : 4.
Discussion:
88 comments Page 6 of 9.
Thrishika said:
2 years ago
How it become 40% to 140%, 50% to 150%? Anyone, explain it.
(23)
Maji ali said:
9 years ago
What is 20% of 50% of 75% of 70? Please tell me the answer.
Anu said:
5 days ago
@Thrishika.
Because we suppose 100% for the 1 part value.
Because we suppose 100% for the 1 part value.
Dipendra said:
6 years ago
Only increased seats?
How is it possible? Please tell me.
How is it possible? Please tell me.
Ram Kundu said:
4 years ago
How it become 14x : 21x : 28x? Please explain this step.
(9)
Priya said:
8 years ago
Sikander can you explain in what aspect you are taking?
Emani karthik Reddy said:
1 decade ago
Thanks singh for easy to solve the problems.Keep it up.
Malli said:
1 decade ago
Because initial amount is 100 then 100+40=140 etc.
Afsal said:
7 years ago
If it's decreasing to 40% then what is the answer?
Mk.raj said:
1 decade ago
Because% mean 100, than 40% increase means 140.
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