Answer this question:Leticia, Scarlett, and Percy decide to eat at a Greek restaurant for lunch. The prices for their dishes cost $10, $13, and $17, respectively. If the trio gives the waiter a 10% tip, how much gratuity should the waiter receive in dollars?
The total bill comes to $10 + $13 + $17 = $40. The total gratuity earned comes to $40 * 0.1 = $4.
The answer is 4.

Answer this question:Tyrah has six times as many pencils as Sarah has. Tim has eight times as many pencils as Sarah. If Tyrah has 12 pencils, how many does Tim have?
Sarah has 12 / 6 = 2 pencils. Tim has 8 * 2 = 16 pencils.
The answer is 16.

Answer this question:Meryll wants to write 35 multiple-choice questions and 15 problem-solving questions for her Chemistry class. She already has written 2/5 of the multiple-choice and 1/3 of the problem-solving questions. How many more questions does she need to write for both multiple-choice and problem-solving?
Meryll has written 35 questions x 2 / 5 = 14 multiple - choice questions. While she has written 15 questions x 1 / 3 = 5 problem - solving questions. The total number of questions that Meryll has to write is 35 questions + 15 questions = 50 questions. Meryll has written a total of 14 questions + 5 questions = 19 questions. Hence, she needs to write 50 questions - 19 questions = 31 questions more.
The answer is 31.

Answer this question:A party hall has 3 decorative light bulbs; a red light bulb which comes on every 2 seconds, a green one every 3 seconds and a blue one every 4 seconds. If they are put on at the same time, what is the shortest time after which the three bulbs will be on at the same time?
The blue light bulb comes on every 2 seconds so it will be on after 2, 4, 6, 8, 10, 12, 14... seconds (multiples of 2). The red light bulb comes on every 3 seconds so it will be on after 3, 6, 9, 12, 15, 18... seconds (multiples of 3). The blue light bulb comes on every 4 seconds so it will be on after 4, 8, 12, 16, 20... seconds (multiples of 4). The shortest time after which all three will be on is 12 seconds which is the least common multiple of the set of multiples.
The answer is 12.