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Simplify and find '?' 48?+32? = 320

Correct Answer: 16

Explanation:

given


  48 ? + 32 ? =   320  


=>  6 ? + 4 ? = 40


Now squaring on both sides


=>  36   x   ?   +   16   x   ?   +   48   x   ?   =   1600


=> 100 x ? = 1600


=>  ? = 16


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