Q: Colin can skip at six times the speed that Brandon can. Brandon can skip at one-third the speed that Tony can. And Tony can skip at twice the speed that Bruce can. At what speed, in miles per hour, can Colin skip if Bruce skips at 1 mile per hour?
A: Tony can skip at twice the speed that Bruce can, for a speed of 1 * 2 = 2 miles per hour. Brandon can skip at one - third the speed that Tony can, for a speed of 2 * (1 / 3) = 2 / 3 miles per hour. Colin can skip at six times the speed that Brandon can, for a speed of (2 / 3 * 6 = 4 miles per hour). The answer is 4.
Question: John's hair grows 1.5 inches every month. Every time it gets to 9 inches long he cuts it down to 6 inches. A haircut costs $45 and he gives a 20% tip. How much does he spend on haircuts a year?
Answer: He cuts off 9 - 6 = 3 inches when he gets a haircut. That means he needs to cut it every 3 / 1.5 = 2 months. So he gets 12 / 2 = 6 haircuts a year. He gives a 45 * .2 = $9 tip. So that means each hair cut cost 45 + 9 = $54. So he pays 54 * 6 = $324 a year. The answer is 324.
[Question]At least a third of Fred's marbles are dark blue. All of the rest are red, except for 4 that are green. If he has 63 marbles, how many of them are red?
[Answer]Fred has 63 / 3 = 21 dark blue marbles. Fred has 63 - 21 = 42 red and green marbles. Fred has 42 - 4 = 38 red marbles. The answer is 38.
Q: Jerusha earned 4 times as much money as Lottie. Together they earned $85. How many dollars did Jerusha earn? Use L to represent Lottie's earnings.
A: L = Lottie's earnings. Jerusha's earnings = 4L. L + 4L = 85. L = 85 / 5. L = 17 so Jerusha earned 4L = 4(17) = 68. Jerusha earned $68. The answer is 68.
Question: The mayor commissioned two artists to paint 50 murals around the city. Once the work was completed, Celina was paid $1,000 more than 4 times the amount Diego got. If the mayor paid the two a total of $50,000, how much did Diego get?
Answer: Let d be Diego's payment. Both artists were paid (1000 + 4 * d ) + d = 50000 dollars. This means that 5d = (50000 - 1000) dollars. Therefore Diego was paid d = 49000 / 5 = 9800 dollars. The answer is 9800.
Q: Three adults whose average weight is 140 pounds went first in the elevator. Two children whose average weight is 64 pounds also went inside. If an elevator sign reads "Maximum weight 600 pounds.", what is the maximum weight of the next person to get in the elevator so that it will not be overloaded?
A:
The sum of the weights of the three adults is 140 x 3 = 420 pounds. The sum of the weight of the two children is 64 x 2 = 128 pounds. So the total weight of the 5 people who are in the elevator is 420 + 128 = 548 pounds. This would mean that the next person's weight must not exceed 600 - 548 = 52 pounds. The answer is 52.