Discussion

Explanation:

Option 2:
If Shyam prepares only puris, then at the end of every 10 minutes from 7:20, he will be able to serve 2 customers. So, he can start making puris from 7:05 and serve 22 customers.
So, profit by selling puri-sabji
= 22 × 15 – 100(Aman’s charges)
= 330 – 100 = 230

Option 3:
If Aman prepares only puris, he will be able to prepare 3 plates in 10 minutes. As Shyam’s sabji will be ready only at 7:30. So, Aman can start making puris from 7:15. Till 8:55, Aman makes 10 plates of puris. So, Shyam can serve 30 customers.
So, profit by selling puri-sabji
= 30 × 15 – 100(Aman’s charges)
= 450 – 100 = 350

Option 4:
Aman prepares first Handi on one oven in first 20 minutes and in first 25 minutes, Shyam will prepare 4 puri plates starting from 7:05.
So at the end of 7:25, 4 puri-sabji plates can be served
After that Shyam prepares another Handi till 7:55 and Aman prepares 9 plates of puri till 7:50
So, at the end of 7:55, 9 more puri plates can be served.
Note that 11 plates of sabji from Handi 2 is remaining.
Shyam will prepare 2 puri plates from 7:55 to 8:05 and then start with Handi 3 till 8:35
Aman will continue with preparing puri plates from 7:50. Till 8:30, He makes 12 more puri plates. So at the end of 8 : 35,
2 + 12 = 14 puri plates can be served.
Note that 9 plates of sabji from Handi 3 is still remaining. This sabji will be hot till 9:00(in fact 9:05)
After 8:30, Aman will continue with Puris and Shyam also will start with puris. But only 9 more plates can be served.
Thus, Shyam can serve 4 + 9 + 14 + 9
= 36 plates of puri-sabji.
So, profit by selling puri-sabji
= 36 × 15 – 100(Aman’s charges)
= 540 – 100 = 440
In previous solution, we have seen that Shyam can make a profit of Rs. 280.
So, his profit will increase after appointing Aman.
Hence, option (d).

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