What will come in place of question mark (?) in the following question?

$78 % o f ? + \frac{2}{7} o f 350 = 490$

200

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600

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500

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800

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None of these

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Solution

The correct option is C
500

$\frac{78}{100} \times ? + \frac{2}{7} \times 350 = 490$
$? = 500$

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