36% of 420 - 56% of 350 = ? - 94

48.2

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49.2

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-138.8

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-158.8

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None of these

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Solution

The correct option is B 49.2
$36 % o f 420 - 56 % o f 350 = ? - 94$
$\Rightarrow \frac{36}{100} \times 420 - \frac{56}{100} \times 350 = ? - 94$
$\Rightarrow \frac{15120}{100} - \frac{19600}{100} = ? - 94$
$\Rightarrow 151.20 - 196 + 94 = ?$
$\Rightarrow ? = 15120 + 94 - 196$
$= 2452 - 196 = 49.2$

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