[Question]Marta works on her grandparent's farm to raise money for a new phone. So far, she has collected $240. For every hour she works, she receives $10. Her grandmother often gives her tips, and she has collected $50 in tips in total. How many hours has Marta worked on the farm so far?
[Answer]Ignoring tips, Marta earned $240 - $50 = $190. Therefore, she has worked 190 / 10 = 19 hours. The answer is 19.

[Question]Mrs. Oaklyn buys handmade rugs at $40 each and sells them at $60 each. If she bought 20 rugs, calculate the profit she will make from selling the rugs.
[Answer]Since she buys one rug at $40 and sells it at $60, she makes a profit of $60 - $40 = $20. If she bought 20 rugs at $40 and sold them at $60 each, she made a profit of 20 * $20 = $400. The answer is 400.

[Question]Matilda bought a smartphone for $300. Then she decided she wouldn't use it anyway and sold it for $255. What percentage of the initial cost did she lose?
[Answer]The difference between the initial cost and the amount she sold the phone for is $300 - $255 = $45. $45 is (($45 / $300) * 100)% = 15% of $300. The answer is 15.

[Question]During one game, a total of 50 people attended a baseball team’s games. Forty percent and thirty-four percent of the audiences are supporters of the first and second teams, respectively. How many people attended the game did not support either of the teams?
[Answer]
50 x 60 / 100 = 30 people support the first team. 50 x 34 / 100 = 17 people support the second team. So, a total of 30 + 17 = 47 people supported the first and second teams. Thus, 50 - 47 = 3 people did not support either team. The answer is 3.