Question

"ella took her boyfriend to a pizza store and spent 24.50 on 2 buffets and 2 hours of gaming. the next night she took her parents, buying 3 buffets and 4 hours of gaming and spend 37. 25. what is the cost of a buffet meal?

Answer 1

x = buffet
y = gaming
2x + 2y = 24.50 || 4x + 4y = 49
3x + 4y = 37.25 || 3x + 4y = 37.25
x = 11.75

Answer 2

how did you do that?!

Answer 3

2x + 2y = 24.50 multiple by 2 = 4x + 4y = 49
3x + 4y = 37.25 multiple by 1 = 3x + 4y = 37.25

then 4x + 4y = 49
3x + 4y = 37.25
--------------- -
x + 0 = 11.75
x = 11.75

Answer 4

why did you multiply by 2 on the first one?

Answer 5

to eliminate y because we juast need x

Answer 6

ohhhh okay could you help me with another story problem?

Answer 7

ok let me try it

Answer 8

a movie is ocming to theathers and they are selling adult tickets for 10.50 and childrens tickers for 5.50. the theather sold 500 tickets opening night and made 4,700 dollars in sales. how many children attended the opening night?

Answer 9

x = adult
y = children
x+y = 500
10.50x + 5.50y = 4700
because u need to find y, u have to eliminate x, can u do this?

Answer 10

for the first equasion do i need to times everything by 10.50

Answer 11

is the answer 50 kids?

Answer 12

is the answer 50 kids?

Answer 13

x+y = 500 | x 10.50| 10.50x + 10.50y = 5250
10.50x + 5.50y = 4700 |x1| 10.50x + 5.50y = 4700
-------------------- -
5y = 550
y = 110

Answer 14

byt what about the first y?????

Answer 15

y = children ticket

Answer 16

hmm, are u got it?

Answer 17

i dont get it at all...

Answer 18

which part u dont understand?

Answer 19

all of it.

Answer 20

ok
a movie is coming to theathers and they are selling adult tickets for 10.50 and childrens tickers for 5.50. the theather sold 500 tickets opening night and made 4,700 dollars in sales. how many children attended the opening night?

1st step to solve that kind of problem is choose a decision variable

Answer 21

let x = # adult ticket and y = # children ticket
then we have a constraint:
1. theatre capacity is 500 ticket
so, x+y = 500
2. ticket prices
for adult = 10.50 and children = 5.50
so , 10.50x + 5.50y = 4700
until this can u understand?

Answer 22

yes, im jsut not understanding thennext part, like how you get the 2 equasions.

Answer 23

yes, im jsut not understanding thennext part, like how you get the 2 equasions.

Answer 24

yes, im jsut not understanding thennext part, like how you get the 2 equasions.

Answer 25

theather capacity is 500 ticket so, we have to divide that theather for adult(x) and children (y)
x+y = 500 ---> number of adult + number of children must be equal to 500

Answer 26

ohh okay

Answer 27

if i helped u can u give me medal or become my fans :D

Answer 28

yeah i will!