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

$175 \times 28 + 275 \times 27.98 = ?$

11800

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12600

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12800

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11600

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12200

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Solution

The correct option is B 12600
$= 175 \times 28 + 275 \times 27.98$
$\approx 175 \times 28 + 275 \times 28$
$\approx 28 (175 + 275)$
$\approx 28 \times 450 \approx 12600$

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