Math>> Help!!

posted by .

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!! -

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!! -

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 -

14:21:24

Similar Questions

1. math

Determine the seating capacity of an auditorium with 10 rows of seats if there are 10 seats in the first row, 16 seats in the second row, 22 seats in the third row, 28 seats in the forth row, and so on ?
2. Math

an auditorium has 50 rows of seats. THe first row has 20 seats, the row has 21 seats, the third row has 22 seats, and so on. each row having one more seat than the previous row. How many seats are there all together?
3. math

The school auditorium has 8 rows of seats, divided into 3 setions. Each section has 15 seats. Which of the following is the correct way to figure out the total number of seats?
4. Discrete Mathematics

Mathematical sequences can be used to model real life applications. Suppose you want to construct a movie theater in your town. The number of seats in each row can be modeled by the formula C_n = 16 + 4n, when n refers to the nth row, …
5. Math

An auditorium has 30 rows of seats. It has 20 seats on the first row, 24 seats on the second row, 28 seats on the third row, and so on. 1. How many seats are there in the 20th row?
6. Math

A school has 30 rows of seats. Each row has 28 seats. How many seats are there?
7. Math

A school hall has 30 rows of seats. Each row has 28 seats.How many seats are there. please show work out.
8. math

there was 112 seats in the school auditorium.there are 7 rows of seats in each row. there are 70 people seated, filling up full rows of seats. how many seats are empty?
9. Math

An auditorium has 150 rows of seats. The first row has 15 seats, the second row has 17 seats, the third row has 19 seats, and so on, each row having two more seats than the previous row. How many seats are there together in the auditorium.
10. Math

There are 4 sections of seat in the playhouse theatre. Each section has7 groups of seats.each group has 25 seats. How many seats are there in the theater?

More Similar Questions