[Question]Pablo likes to put together jigsaw puzzles. He can put together an average of 100 pieces per hour. He has eight puzzles with 300 pieces each and five puzzles with 500 pieces each. If Pablo only works on puzzles for a maximum of 7 hours each day, how many days will it take him to complete all of his puzzles?
[Answer]First find how many pieces are total in each puzzle. 8 puzzles * 300 pieces each = 2400 pieces. Next, 5 puzzles * 500 pieces each = 2500 pieces. All of the puzzles have 2400 pieces + 2500 pieces = 4900 pieces total. He will work a maximum of 7 hours each day * 100 pieces per hour = 700 pieces per day. So he will end up taking 4900 pieces total / 700 pieces per day = 7 days total. The answer is 7.
Q: A luxury perfume costs $1200. The store owner decided to increase its price by 10% so that he could earn more profit. Few weeks had past but the perfume was still not sold. So, the owner decided to lower the price by 15%. By how much was the final price lower than the original price?
A: There was a $1200 x 10 / 100 = $120 increase of the original price. So, the perfume was priced for $1200 + $120 = $1320. Then, 15% of the new price is $1320 x 15 / 100 = $198. So, the final price is now $1320 - $198 = $1122. Therefore, the final price is $1200 - $1122 = $78 lower than the original price. The answer is 78.
Question: After Bella’s ballet performance, she received 2 dozen roses from her parents, and 2 roses from each of her 10 dancer friends. How many roses did Bella receive?
Answer: Bella receives 2 x 12 = 24 roses from her parents. She receives 2 x 10 = 20 roses from her friends. She receives a total of 24 + 20 = 44 roses. The answer is 44.
[Question]Scout delivers groceries on the weekends. His base pay is $10.00 an hour. He also earns a $5.00 tip per customer that he delivers groceries to. On Saturday he worked 4 hours and delivered groceries to 5 people. Sunday he worked 5 hours and delivered groceries to 8 people. How much did he make over the weekend?
[Answer]He worked 4 hours on Saturday and 5 hours on Sunday for a total of 4 + 5 = 9 hours. His base pay is $10.00 an hour and he worked 9 hours for a total of 10 * 9 = $90.00. He delivered groceries to 5 people on Saturday and 8 people on Sunday for a total of 5 + 8 = 13 deliveries. He makes $5.00 per delivery and he delivered to 13 people so he made 5 * 13 = $65.00. His base pay is $90.00 and he made $65.00 in tips for a total of 90 + 65 = $155.00. The answer is 155.
Q: Betty has a tray of cookies and a tray of brownies. She has a real sweet tooth and eats 3 cookies a day and 1 brownie a day. If she starts with 60 cookies and 10 brownies, how many more cookies than brownies does she have after a week of eating like this?
A: First we find how many cookies Betty will eat in a week by multiplying her daily amount by 7, meaning 7 * 3 = 21 cookies eaten in a week. We repeat this for the brownies, finding she eats 7 * 1 = 7 brownies in a week. We subtract the 21 cookies from the original amount of 60, finding 60 - 21 = 39 cookies remaining. We repeat this step for the brownies, finding 10 - 7 = 3 brownies remaining. In the end, therefore, Betty has 39 - 3 = 36 more cookies than brownies. The answer is 36.
Question: There are 14 kindergartners and 24 first graders and some second graders in Ms. Watson's class. Overall Ms. Watson has 42 students. How many second graders are in Ms. Watson’s class?
Answer:
There are 14 + 24 = 38 kindergartners and first graders in Ms. Watson’s class. There are 42 - 38 = 4 second graders in Ms. Watson’s class. The answer is 4.