Question

Please help me...
the time required to do a job varies inversely as the number of people working. It takes 6hrs for 3 bricklayers to build a park wall. How long will it take 7 bricklayers to complete the job?

Answer 1

You can use a proportion to solve this: I hope this help! :)

Answer 2

it does thanks

Answer 3

That is strange, as 3 bricklayers can build it in 6 hours, you would expect with more bricklayers it would take less than 6 hrs, not more like 14 hrs. remember it is an inverse relationship.

Answer 4

Hmm. You do got a point.

Answer 5

Oh no, so sorry, marigarcia. T~T I should've checked my work.

Answer 6

ok Radar so how is the equation will look like..

Answer 7

goldPhenoix its ok..

Answer 8

I am hoping GoldPhenoix will show you how. I know if there was 6 bricklayers they should build the wall in 3 hrs.

Answer 9

yeah that's what I'm thinking.. so Radar you are not going to help me???

Answer 10

I am trying to come up with a inverse relationship, I'm thinking, give me some time to figure this thing out.

Answer 11

radar ok.. thanks

Answer 12

I'm thinking of doing 3/7 and then multiply it by 6. Would that give you the answer?

Answer 13

GoldPhenoix so how the equation will be?/

Answer 14

An inverse relationship would be something like y= k/x where k is the constant of proportion, x is the variable, and y is the result. I think GoldPhenois is on the right track

Answer 15

6=k/3 so k=18

x=18/7 seems that would be the answer. I am rusty at this.

Answer 16

Radar that's the same equation that I have.

Answer 17

And GoldPhenoix comes out the same, I think that is a reasonable answer let me try it with the 6 bricklayers

y=18/6 =3 hrs. It makes sense.

Answer 18

the answer is 2hrs and 4/7

Answer 19

Do you get instant feedback when you input an answer, if so, was that correct?

Answer 20

I was confused but when you explain it make more sense..

Answer 21

know can you help me with this problem because I'm not good at solving story problems

Answer 22

I believe GoldPhenoix first post is true when their is a direct relationship. In this case it was an inverse relationship. His later post took that into consideration. I am going to award a medal for him, you deserve one also, because you also stuck with it and see how it is done.

Answer 23

thanks for helping me and for the award..

Answer 24

The photo for your avatar is that a doll or is it your child?

Answer 25

It only allowed me to make one award. But you deserve an award.

Answer 26

would you help me to solve this....
A student traveled 244 km in 17 days. At the same ratio, how far would the student travel in 85 days.

Answer 27

radar its ok with the reward gave it to Goldphenoix.. about the photo its my nice..

Answer 28

I think the equation for this one will be something like this: r=d/t, I'm I right

Answer 29

That one seems easier. First find out what is travel is for one day by dividing 244 by 17 oops they want you to use ratios.

17:244 :: 85:X