Answer: (C)
Question: A boy runs 200 metres in 24 seconds. What is his speed?
Options:
(A) 20 km/hr
(B) 24 km/hr
(C) 30 km/hr
(D) 32 km/hr
(E) 34 km/hr
[CoT]: [200/24 * 18/5 = 30 km/hr]

Answer: (B)
Question: What is the sum of all the prime numbers greater than 30 but less than 50?
Options:
(A) 126
(B) 199
(C) 198
(D) 188
(E) 122
[CoT]: [Required sum = (31 + 37 + 41 + 43 + 47) = 199
Note: 1 is not a prime number]

Answer: (E)
Question: John makes $50 a week from his job. He earns a raise and now makes $70 a week. What is the % increase?
Options:
(A) 16%
(B) 16.66%
(C) 18%
(D) 21%
(E) 40%
[CoT]: [Increase = (20/50)*100 = 40%.]

Answer: (C)
Question:

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
How much 50% of 56 is greater than 30% of 50?
Options:
(A) 18
(B) 99
(C) 13
(D) 55
(E) 71
[CoT]: [(50/100) * 56 – (30/100) * 50
28 - 15 = 13]