Need help for this multiple choice (2 Viewers)

[Etan1827]

Hiya. Kinda need help on this logistic (i think) question from Penrith 2022 Ext 1. Pls help. Thank you!

 

[cossine]

Hiya. Kinda need help on this logistic (i think) question from Penrith 2022 Ext 1. Pls help. Thank you!
View attachment 39987

None of the options are correct.

The answer is

dx/dt = -15/100 * x

 

[Etan1827]

Even if they aren't correct, could you explain how you got there?

 

[synthesisFR]

Hiya. Kinda need help on this logistic (i think) question from Penrith 2022 Ext 1. Pls help. Thank you!
View attachment 39987

@carrotsss

 

[cossine]

Even if they aren't correct, could you explain how you got there?

If you understand the question you should be able to get the answer. 15% comes from the question. We are told x is the number of gram of undissolved salt. The number of grams of undissolved salt is decreasing over time.

Therefore the answer is

dx/dt = -(15/100)*x

 

[carrotsss]

@carrotsss

I did this paper a while back and the answers are all wrong

 

[synthesisFR]

I did this paper a while back and the answers are all wrong

yes i know im the one who showed u this question

 

[Unovan]

Oh this question was wrong I thought I was so stupid after doing this paper hahahha

 

[carrotsss]

yes i know im the one who showed u this question

huh

 

[synthesisFR]

 

[carrotsss]

View attachment 39989

damn who knew

everything is just blurred together