Here's a short story:

John and Bobby joined a wholesale company together just after graduation from college the same year. Both worked very hard. After several years, however, the boss promoted Bobby to the position of manager but John remained an ordinary employee. John couldn't understand it anymore, gave his resignation to the boss and complained that the boss didn't value hardworking workers, but only promoted those who flattered him. The boss knew that John worked very hard for the years. He thought for a moment and said, "Thank you for your criticism , but I have a request. I hope you will do one more thing for our company before you leave. Perhaps you will change your mind and take back your resignation." John agreed. The boss asked him to go and find out anyone selling watermelon in the market. John went and returned soon. He said he had found out a man selling watermelon. The boss asked how much per kg? John shook his head and went back to the market to ask and returned to tell the boss $1.2 per kg. Boss told John to wait a second, and he called Bobby to come to his office. He asked Bobby to go and find anyone selling watermelon in the market. Bobby went, returned and said, "Boss, only one person selling watermelon. $1.2 per kg, and $10 for 10kg. He has 340 melons in all, 58 of which are on the table. Every melon weighs about 2 kg. Bought from the South two days ago, they are fresh and red, good quality." John was very impressed and realized the difference between himself and Bobby. He decided not to resign but to learn from Bobby. My dear friends, chances exist in the daily details. For the same matter, a more successful person sees more and farther so that he can find out an opportunity and catch it to realize his aim. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: what did the boss ask John to go find?
Guess: anyone selling watermelon in the market

Question: where did he work?
Guess: a wholesale company

Question: who worked for him there?
Guess: John and Bobby

Question: who got promoted?
Guess: Bobby

Question: was John happy about it?
Guess: no

Question: did he threaten to quit?
Guess: Yes

Question: how much were the watermelons that he found?
Guess: $1.2 per kg

Question: how much did Bobby find out they were?
Guess: $1.2 per kg

Question: how much for 10kg?
Guess: $10

Question: how many people were selling them?
Guess: one

Question: did John quit?
Guess: No

Question: did he take back his resignation?
Guess: Yes

Question: who convinced him?
Guess: Bobby

Question: where did the watermelons come in from?
Guess: from the South

Now answer the following question in the same format.

Question: how many total were available?

340