Question

Which situation is best represented by the equation below?
3x = 27
A The total cost of a dinner and tip was $27. If a $3 tip was included in the total cost, what is x, the cost of the dinner?
B The total cost of a dinner and dessert was $27. The cost of the dinner was 3 times the cost of the dessert. What is x, the cost of the dessert?
C Three friends went to dinner, and each paid $27. What is x, the total amount they spent on dinner?
DThree friends went to dinner and paid a total of $27. If they divided the bill evenly, what is x, the amount each friend paid?

Answer 1

Do trial and error on all the choices.

Answer 2

trial and error? whats that

Answer 3

It means write out the equation for each choice and see which one matches the given statement.

Answer 4

oh. for example, what would be the equation for A_?

Answer 5

@blockcolder

Answer 6

For A., the equation is x+3=27.

Answer 7

because total=add_?

Answer 8

x=9

Answer 9

@blockcolder because total means add?

Answer 10

Yes. :D

Answer 11

ok.

Answer 12

the equation is saying 3 times something is 27

that should help

Answer 13

let me c if i can figure out B

Answer 14

ok.

Answer 15

i think its b

Answer 16

@blockcolder

Answer 17

I think its B

Answer 18

because it says the cost eas 3 times the dessert

Answer 19

If x is the dessert, then 3x is the dinner and their total is 27. This gives x+3x=27 or 4x=27, so it's not B.

Answer 20

ur right

Answer 21

B says Dinner + dessert = 27

and dinner = 3 x dessert

substituting gives

3 dessert + dessert = 37

4 dessert = 27

Answer 22

it says its D on the answer key, but D says if they divide it uo evenly

Answer 23

and the equation has to do with multiplying,right?

Answer 24

Yeah, so if each friend paid x, we have x+x+x=27, or 3x=27.

Answer 25

oh.!!!

Answer 26

ok.

Answer 27

thanks.

Answer 28

No problem. :D

Answer 29

:)

Answer 30

ill be posting some more questions in a few minutes