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Shyam prepares and sells piping hot puri and sabji (gravy) from 7:00 am to 9:00 am (both inclusive) through a stall at XLRI campus. Presently, he has just a single oven, which can do only one job at a time. It takes 30 minutes to cook one handi (a large bowl) of sabji, sufficient for 12 customers. It takes him 10 minutes to prepare 2 plates of puri at a time. While the cost of a plate of puri-sabji is ₹ 10, the price is ₹ 25. Puri stays hot for only 5 minutes after preparation, while sabji stays hot for 30 minutes only. It takes 10 minutes to reheat the sabji which stays hot for another 30 minutes. If he brings a handi of hot sabji from home, the transport would cost him ₹ 50. It can also stay hot for 30 minutes excluding the transportation time. Currently, every 20 minutes five plates are ordered. All unsold quantities are distributed at cost after 9:30 am.
Find the maximum number of plates of puri-sabji Shyam can sell in the first hour of business?
The 1st handi of sabji is brought from home. This can be served for 12 customers. Two plates of puri's are made in 10 mins.
Now in 30 min, the number of puri-sabji that can be served = 6
After 30 min, the sabji needs to be heated which taken 10 mins.
Hence, in the remaining 20 min 4 plates of puri-sabji can be served.
Hence, in total in the first hour 10 plates of puri-sabji can be served.
Hence, option C is the correct answer.
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