Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
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Question: Problem: four bells commence tolling together and toll at intervals of 2, 4, 6, 8 seconds respectively. in 18 minutes, how many times do they toll together ?
Options: a. 43, b. 44, c. 45, d. 46, e. 47

Answer: c


Question: Problem: a 340 - liter solution of kola is made from 88 % water, 5 % concentrated kola and the rest is made from sugar. if 3.2 liters of sugar, 10 liter of water and 6.8 liters of concentrated kola were added to the solution, what percent of the solution is made from sugar ?
Options: a. 6 %., b. 7.5 %., c. 9.2 %., d. 10.5 %., e. 11 %.

Answer: b


Question: Problem: the average weight of 25 persons sitting in a boat had some value. a new person added to them whose weight was 46 kg only. due to his arrival, the average weight of all the persons decreased by 5 kg. find the average weight of first 25 persons ?
Options: a. 55 kg, b. 48 kg, c. 52 kg, d. none, e. 55 kg

Answer:
d