Question

. If p varies directly as q and p = 8 when q = 3, find p when q = 54.
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Answer 1

. If p varies directly as q and p = 8 when q = 3, find p when q = 54.

• Answer

As p varies inversely as q then let,

p=qk, where k is a constant 

As p=7 and q=3 satisfies so,

7=3k 

k=21

∴p=q21 

For q=37

p=3721=3×3=9