Question

the number of hours required to complete a certain job varies inversely as the number of machines used to do work, assuming that they operate at the same rate. if 4 machines can complete a certain job in 10 hours, how long will it take 6 machines can complete the same job?

Answer 1

who can help?

Answer 2

10 hours times would be 600 minutes, 600 divided by 6 machines would be 100 minutes per machine, or 1 hour and 40 minutes per machine

Answer 3

1 hr and 40 min. is the answer sir?

Answer 4

logically thinking I think so, is that one of the possible answers listed on your assignment?

Answer 5

i dont have the answer on my assignment :(

Answer 6

we must solve it

Answer 7

what is confusing is it says "as the number of machines can complete a certain job in 10 hours" but doesn't say how many machines that is, but then goes on to say "how long will it take 6 machines can complete the same job", if it said one machine took 10 hours, then defferently 6 machines could do it in a hour and 40 minutes, but im not sure if im reading it right or not

Answer 8

oh my bad im wrong i will edit it wait

Answer 9

already done try to answer sir pls

Answer 10

ok, give me just a sec to work it out

Answer 11

ok sir tnx

Answer 12

hlo wio

Answer 13

im still here just trying to think it through.. kinda changes it up just a bit since its now 4 to 10 hours, instead of just one, lol, anyways give me a sec and ill try help find you a way to solve it if nobody else beats me(witch is ok, im still learning all this myself lol)

Answer 14

oh

Answer 15

u done?

Answer 16

4 takes 10 hours,
8 would take 5 hours

so logically 6 would be in the middle at 7 hours 30 minutes

Answer 17

does that sound right to you?

Answer 18

do u have ur solution?

Answer 19

i am only only do this logically, as I said im new at this myself to, but if you think about it, 4 machines takes 10 hours, if we doubled that amount of machines to 8 we know it would get done in 5 hours. so 6 machines sounds likes 7 1/2 hours going by that

Answer 20

but sir i need an answer :(

Answer 21

who can help there?

Answer 22

hang on, a buddy of mine is on, he is a genus with this stuff, let me send him a message to look over this and see what he thinks

Answer 23

ok sir tnx :D

Answer 24

i sent a message to Hero

Answer 25

ok tnx man

Answer 26

hero,,,, can u give the equation pls i need ur help :D

Answer 27

pls hero

Answer 28

In mathematics, the inverse relation of a binary relation is the relation that occurs when you switch the order of the elements in the relation.

If 4 machines take 10 hours the relation for that job is 1 to 2.5.
The inverse of that relation would be 2.5 to 1

6/2.5 = 2.4

6 Machines will take 2.4 hours to complete the job.

However if you wanted to get technical.

the number of hours required to complete a certain job varies inversely
how long will it take 6 machines can complete the same job

Since it is the same job there would be no variation.

Answer 29

Considering that there are typos in the question it is possible the questions was not relayed accurately.

Answer 30

ok sir tnx i appreciate that