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 The amount of time it takes Heather to cook dinner is directly proportional to the number of ingredients involved. If it takes her t minutes to cook dinner when there are n ingredients involved how many ingredients are involved if it takes her 30 minutes to cook dinner?

 

A) 30tn

 

B) 30n/t

 

C) 30t/n

 

D) n/t

 

E)t/n

 Sep 12, 2019

Best Answer 

 #1
avatar+18868 
+4

You are given:    t = kn

  so  k = t/n

 

30 = kn can be re-arranged to

30/k = n          but remember the equation above (in red) ....substitue this value in for k

 

30/ (t/n) = n

30 *  n/t = n

30n/t  = number of ingredients

 
 Sep 12, 2019
 #1
avatar+18868 
+4
Best Answer

You are given:    t = kn

  so  k = t/n

 

30 = kn can be re-arranged to

30/k = n          but remember the equation above (in red) ....substitue this value in for k

 

30/ (t/n) = n

30 *  n/t = n

30n/t  = number of ingredients

 
ElectricPavlov Sep 12, 2019

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