A sack of rice, which is 50 kilograms, costs $50. If David sells it for $1.20 per kilogram, how much will be his profit?
Let's think: David's revenue for the 50 kilograms of rice is $1.20 x 50 = $60. So, his profit is $60 - $50 = $10.. The answer is: 10.

A florist offers for sale 75 narcissus flowers and 90 chrysanthemums. Using all the flowers, how many bouquets containing 5 flowers each can he make?
Let's think: The florist can make 75 / 5 = 15 bouquets of narcissus. The florist can make 90 / 5 = 18 bouquets of chrysanthemums. The florist can make 15 + 18 = 33 bouquets in total.. The answer is: 33.

Thirty students run in a charity race to raise money for the hurricane victims. Ten of the students raised $20 each. The rest of the students raised $30 each. How much did the students raise in all?
Let's think: Ten students raised a total of $20 x 10 = $200. There are 30 - 10 = 20 students who raised $30 each. Twenty students raised a total of $30 x 20 = $600. Therefore, the students raised a total of $200 + $600 = $800.. The answer is: 800.

John is budgeting for his marriage. The venue cost $10,000. It cost $500 for each guest, and John wants 50 guests while his wife wants 60% more than that. How much would the wedding cost if John's wife gets her way?
Let's think:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The bride wanted 50 * .6 = 30 more guests than the husband. So the bride wanted 50 + 30 = 80 guests. So the guests cost 80 * $500 = $40000. So the total cost was $40000 + $10,000 = $50000.. The answer is: 50000.