# 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 5*x*, 7*x* and 8*x* respectively.

Number of increased seats are (140% of 5*x*), (150% of 7*x*) and (175% of 8*x*).

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 |

14*x* : 21*x* : 28*x*

2 : 3 : 4.

Discussion:

76 comments Page 8 of 8.
Hiitha said:
2 years ago

@All.

Still did not get clarified that why we should use 140/100?

Still did not get clarified that why we should use 140/100?

(3)

Pabitra said:
2 years ago

Still not clear.

Can you explain it clearly in a shortcut way?

Can you explain it clearly in a shortcut way?

(1)

Abdulsalam said:
7 months ago

How can we get the total number of seats?

Please, anyone, explain me.

Please, anyone, explain me.

(3)

Akash hotty said:
5 months ago

Can anyone explain it shortly?

(4)

Shivangi said:
2 months ago

How it became 40% to 140%, 50% to 150%?

(17)

Mehreen said:
2 weeks ago

Is it because of the percentage increase we are taking 140%?

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