Write a proportion for this problem?

Question

Two machines can complete 7 tasks every 4 days. Let "t" represent the number of tasks these machines can complete in a 30-day month. Select the correct statement for the given conditions.
[A] 30/14 = t/4
[B] 4/7 = t/30
[C] 4/30 = t/7
[D] 7/4 = t/30

Thanks almost everyone for answering.

I suggest that you learn math and logic skills on your own this looks more like the answer for a test and I find it immoral to answer this.
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1. It's not a test. You can't bring home a test!
2. I understand this. It's call "checking to make sure".

Answer 1

The answer is in fact D. Here's why:
tasks:7
days: 4
7: 4
T: 30
OR 7/4
T/30 (which is option D)
Thsi reads: If 7 tasks are done in 4 days, then how many tasks are done in 30 days?
You criss cross multiply to get your answer:
7x30=4T
Then you can see that D is the only one which doesn't change this proportion.
A is totally wrong because there is no 14
B is wrong because 4/7 = 30/T
C is wrong because it puts the days in proportion to each other (4 and 30 can't be a fraction)
D is correct because it keeps the integrity of the proportion by matching the criss cross pattern of the proportion.

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ps, on a personal note, have you ever noticed that when someone doesn't know an answer, they suddenly become the moral police and assume that the asker is cheating on a test. I guess they never had to do homework!!! lol... ;o)

Answer 2

[D] 7/4 = t/30

Answer 3

I suggest that you learn math and logic skills on your own this looks more like the answer for a test and I find it immoral to answer this.

Answer 4

E. 720hrs/96hrs=7.5x7t=52.5 t

There are only 672 hrs in 28 days
and 720 hrs. in 30 days a trick question.

Answer 5

d

Answer 6

the answer is 'D'

Answer 7

D

Answer 8

[D]