Pe Problems he following transaction of Raj:
Raj started business with cash Rs 20,000
Purchased goods for cash Rs 4,000
Goods purchased from Rabina Rs 4,000
Furniture purchased from Kailash for Rs 6,000
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Atennis club charges a monthly membership fee of $150 and charges it members $10 per hour to use a court. there's also $500 fee to become a member. stella joined the tennis club last spring, and she has been a member for 5 months. she has been playing 10 hours of tennis each month. stella values an hour of her time at $20. during a boring afternoon meeting, stella thinks about reserving a court to work on her serve for an hour tonight. what's stella's opportunity cost of working on her serve for an hour?