Posted by **Jnr John** on Wednesday, June 5, 2013 at 7:09pm.

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?

- Math>> Help!! -
**herp_derp**, Wednesday, June 5, 2013 at 9:50pm
well...not sure if my answer is right but...

so the original ratio is 5:7:8

the increase is 40%,50%, and 75% respectively...

so...

5 x 0.4 = 2

7 x 0.5 = 3.5

8 x 0.75 = 6

Therefore the new ratio is:

4:7:12 (remember you cant hav decimals)

and always remember...HERP THE DERP!!

- Math>> Help!! -
**Steve**, Thursday, June 6, 2013 at 10:48am
Looks like you have the ratios of the increases, but I think they are asking about the final seat totals.

That would be

5*1.4 : 6*1.5 : 7*1.75

= 7:9:12.25

= 28:36:49

- Math -
**sowdha**, Saturday, January 2, 2016 at 9:46am
14:21:24

## Answer This Question

## Related Questions

- math - there was 112 seats in the school auditorium.there are 7 rows of seats in...
- Math - A school hall has 30 rows of seats. Each row has 28 seats.How many seats ...
- Math - There are 4 sections of seat in the playhouse theatre. Each section has7 ...
- math - The school auditorium has 8 rows of seats, divided into 3 setions. Each ...
- Math - A school has 30 rows of seats. Each row has 28 seats. How many seats are ...
- algebra - 17 occupied seats on the bus 11seats are empty what is a ratio of ...
- Math - An auditorium has 150 rows of seats. The first row has 15 seats, the ...
- Discrete Mathematics - Mathematical sequences can be used to model real life ...
- 4th grade math - There are 12 seats in the school auditorium. There are 7 seats ...
- math - Determine the seating capacity of an auditorium with 10 rows of seats if ...

More Related Questions