A Food company sells regular lunch for 2.39 $p e r d i s h a n d p r e m i u m l u n c h f o r$ $2.79$ per dish. If the total sales of lunch dishes in a day comes to be $550$ dishes combining both and makes total sales of 1,344.50$, then how many total sales of premium lunch dishes did it do?

25

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75

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175

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475

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Solution

The correct option is A $75$
Let the total number of regular lunches be x. Then the total number of premium lunch will $550 - x$ .
Hence the total sales will be $2.39 (x) + 2.79 (550 - x) = 1344.50$ $\to 1534.5 - 0.4 x = 1344.50$
$190 = 0.4 x$ or $x = \frac{19 \times 100}{4} = 475$ . Hence the number of premium lunches will be $550 - 475 = 75$ .

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