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:
89 comments Page 5 of 9.
Raju said:
8 years ago
Anyone, Please explain for me.
Sivaji said:
8 years ago
Increase % means 100+x% so 140, 150, 175values are add to 50, 70, 80 then ratio are 2:3:4.
Pankaj said:
8 years ago
Very good explanation, Thanks.
Priya said:
8 years ago
Sikander can you explain in what aspect you are taking?
Priya said:
8 years ago
Very good explanation, Thanks @Harjinder Singh.
Isaactamson said:
9 years ago
The 40% of 5 =2,
50% of 7 = 3.5,
75% of 8 = 6,
(5+2)x2 = 14,
(7+3.5)x2 = 21,
(8+6)x2 = 28,
= 16:21:28.
The ratio will be 2:3:4.
50% of 7 = 3.5,
75% of 8 = 6,
(5+2)x2 = 14,
(7+3.5)x2 = 21,
(8+6)x2 = 28,
= 16:21:28.
The ratio will be 2:3:4.
(2)
Isaactamson said:
9 years ago
The 40% of 5 =2,
50% of 7=3.5,
75% of 8 = 6,
The ratio will be 2:3:6.
50% of 7=3.5,
75% of 8 = 6,
The ratio will be 2:3:6.
Sikander said:
9 years ago
Isn't that simple like if we add 40% + 50% + 70% = 165,
40/165 = 2.
50/165 = 3.
75/165 = 4.
40/165 = 2.
50/165 = 3.
75/165 = 4.
(1)
Maji ali said:
9 years ago
What is 20% of 50% of 75% of 70? Please tell me the answer.
Shikha said:
9 years ago
Thanks @Ramesh.
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