[Question]Maryann can pick the lock on a cheap pair of handcuffs in 6 minutes and on an expensive pair of handcuffs in 8 minutes. If Maryann needs to rescue three of her friends who have expensive handcuffs on their hands and cheap handcuffs on their ankles, how long will it take for her to free all of them?
[Answer]First find the total time it takes Maryann to rescue one friend: 6 minutes + 8 minutes = 14 minutes. Then multiply the time to save one friend by the number of friends Maryann needs to save: 14 minutes / friend * 3 friends = 42 minutes. The answer is 42.
Q: In a class of 30 students, the teacher polls the students on their favorite subject. 1/5 of the students like Math, and 1/3 like English. 1/7 of the remaining students like Science. The rest don’t have a favorite subject. How many students don’t have a favorite subject?
A: 30 x 1 / 5 = 6 students like Math. 30 x 1 / 3 = 10 students like English. So, 6 + 10 = 16 students like either Math or English. Thus, 30 - 16 = 14 students neither like Math nor English. Since 1 / 7 of the remaining like Science, therefore 14 x 1 / 7 = 2 students like Science. Hence, 14 - 2 = 12 students neither likes the 3 subjects. The answer is 12.
Question: The Early Bird Dinner offered dinner meals at half off the menu price if you eat between 2-4 pm. Curtis ordered the Salisbury Steak that costs $16.00 and Rob ordered the Chicken Fried Steak at $18.00. If they ate at 3 pm, what was the cost of their total bill?
Answer: Curtis had the Salisbury steak for $16.00 and Rob had the Chicken Fried Steak at $18.00 so their meal cost 16 + 18 = $34.00. They ate 3 pm so their meal is half off so their meal cost 34 / 2 = $17.00. The answer is 17.
[Question]Allie, Rob, and Allyn each bought a bowl of grapes. Allie's bowl contained two more grapes than Rob's bowl. Allyn's bowl contained four more grapes than Allie's bowl. If Rob's bowl contained 25 grapes, what is the total combined number of grapes in all three bowls?
[Answer]If Allie's bowl contained two more grapes than Rob's bowl, there were 25 + 2 = 27 grapes in Allie's bowl. If Allyn's bowl contained four more grapes than Allie's bowl, there were 27 + 4 = 31 grapes in Allyn's bowl. The total combined number of grapes in all three bowls is 25 + 27 + 31 = 83 grapes. The answer is 83.
Q: A new edition Geometry book has 450 pages which are 230 pages less than twice as many pages as the old edition. How many pages did the old edition Geometry book have?
A: Let x be the number of pages of the old edition Geometry book. The new edition Geometry book has 2x - 230 = 450 pages. 2x = 450 + 230. 2x = 680. x = 340 pages. The answer is 340.
Question: In a guessing game, Hajar's score is 24 points. The difference in the scores between Hajar and Farah's score in the game is 21. What is the sum of their scores, assuming Farah's score is higher than Hajar's?
Answer:
If the difference in scores between Farah and Hajar in the game is 21 points, and Hajar's score is 24, then Farah has a score of 21 + 24 = 45 points. The overall score in the game is 45 + 24 = 69. The answer is 69.