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If j and k are inversely proportional and j = 42 when k = 56 , what is the value of j when  k = 98?

 Jan 6, 2022
 #1
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If they're inversely proportional, then \(j*k=j*k\) even when j and k are different. In this case, \(42*56=j*98\)

 

We would have \(j= (48*56)/98\)

 

Solving this, we have \(j = 24\) 

 

(correct me if i am incorrect)

 Jan 6, 2022
edited by ahz001  Jan 6, 2022
 #2
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INversely proportional

j = c/k     or

jk = c       c = constant

42(56) = 2352

 

when k = 98

 

j (98) = 2352

j = 2352/98 = 24         just as ahz001 found !

 Jan 6, 2022

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