edited by
683 views
0 votes
0 votes

Seats for Mathematics, Physics and Biology in a school are in the ratio of $5 : 7 : 8$. There is a proposal to increase these seats by $40\%, 50\%$ and $75\%$ respectively. What will be the ratio of increased seats?

  1. $2:3:4$
  2. $6:7:8$
  3. $6:8:9$
  4. None of the above options
edited by

1 Answer

0 votes
0 votes
Given that, ratio of seats $M:P:B = 5:7:8$

Let say $M = 50$, increased by $40\% =  50 + 50 \times \frac{40}{100} = 50 + 20 = 70$

$P = 70$, increased by $50\% =  70 + 70 \times \frac{50}{100} = 70 + 35 = 105$

$B = 80$, increased by $75\% =  80 + 80 \times \frac{75}{100} = 80 + 60 = 140$

$\therefore$ The required ratio $M:P;B = 70:105:140 = 2:3:4.$

So, the correct answer is $(A).$
Answer:

Related questions

0 votes
0 votes
1 answer
1
Lakshman Bhaiya asked Mar 30, 2020
1,651 views
What is the maximum number of the handshakes that can happen in the room with $5$ people in it?$15$$10$$6$$5$
1 votes
1 votes
2 answers
2
Lakshman Bhaiya asked Mar 30, 2020
1,150 views
A train running at the speed of $60$ km/hr crosses a pole in $9$ seconds. What is the length of the train?$120$ meters$180$ meters$324$ meters$150$ meters
1 votes
1 votes
2 answers
3
0 votes
0 votes
1 answer
4
Lakshman Bhaiya asked Mar 30, 2020
884 views
A boatman goes $2$ km against the current of the stream in $1$ hour and goes $1$ km along the current in $10$ minutes. How long will it take to go $5$ km in stationary wa...
2 votes
2 votes
1 answer
5
Lakshman Bhaiya asked Mar 30, 2020
896 views
The present ages of three persons in proportions $4 : 7 : 9$. Eight years ago, the sum of their ages was $56$. Find their present ages (in years).$8, 20, 28$$16, 28, 36$$...