A survey show that 63% people watch news channel A whereas 76% people watch news channel B. If x% of people watch both news channels, then prove that 39≤x≤63

A survey show that 63% people watch news channel A whereas 76% people watch news channel B. If x% of people watch both news channels, then prove that $39 \leq x \leq 63$

Match the items on the right to the items on the left.

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