Question

A packing operator can assemble 3 cardboard boxes in 6 minutes. At this rate, how many boxes can she assemble in 30 minutes?
A. 18
B. 15
C. 9
D. 21

Answer 1

Ill give medal!

Answer 2

Have you learned about proportions?

Example:
\[\dfrac{3}{6}=\dfrac{x}{30}\]

Answer 3

...

Answer 4

How do ya do it man.

Answer 5

B is the correct ans

Answer 6

Katie bought 6 hotdogs for $1.89 each and 3 drinks for $1.10 each. Which equation can be used to find the total cost, C, of the hotdogs and drinks?
A. C = (6 × 1.89) + (3 × 1.1)
B. C = (6 × 3) + (1.89 × 1.1)
C. C = (3 × 1.89) + (6 × 1.1)
D. C = (6 + 1.89) + (3 + 1.1)

Answer 7

Last one

Answer 8

@ksaichandra
I was typing the explanation out -_-. Please do not just give out answers.

Answer 9

I want to know how to do it

Answer 10

not just the answer

Answer 11

guys????

Answer 12

@Opcode

Answer 13

Okay, well basically there are things called a ratio.
Normally written as: 1:2 or 3:6, etc.

We can use ratios to set up proportions for bigger values.
Example:
\[\dfrac{3}{6}=\dfrac{x}{30}\]

The 3/6 (3:6) is from the question. "3 cardboard boxes in 6 minutes"

Now you have to cross multiply.

Answer 14

I need to know this question man.....im stuck badly.....

Answer 15

Katie bought 6 hotdogs for $1.89 each and 3 drinks for $1.10 each. Which equation can be used to find the total cost, C, of the hotdogs and drinks?
A. C = (6 × 1.89) + (3 × 1.1)
B. C = (6 × 3) + (1.89 × 1.1)
C. C = (3 × 1.89) + (6 × 1.1)
D. C = (6 + 1.89) + (3 + 1.1)

Answer 16

Yes, I understand ratios...I didnt know how to set that up though....

Answer 17

Oh okay :-).

Katie bought (6 hotdogs for $1.89 each and 3 drinks for $1.10 each). Which equation can be used to find the total cost, C, of the hotdogs and drinks?

The soft brackets indicate what is important in the question.
6 hotdogs for $1.89 each
3 drinks for $1.10 each

C (COST) = 1.89(h) + 1.10(d)

h = 6 (hotdogs)
d = 3 (drinks)

Answer 18

A

Answer 19

....

Answer 20

Yes, A is correct. I hope you understand though.

Answer 21

Thx guys :D

Answer 22

there i voted :D