70% of the magic tricks that Jade knows are card tricks. If she knows 14 card tricks, how many magic tricks does Jade know in all?

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1. Answer:

   20

   Step-by-step explanation:

   Given data

   Let the number of magic tricks be x

   we are told that she knows 70% of card trick which is 14 card tricks

   hence we have

   70/100*x= 14

   0.7x= 14

   x= 14/0.7

   x=20

   Hence the number of magic tricks she knows is 20

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