[Question]John decided to buy 10 pins for himself. They are normally $20 each but they were on sale for 15% off. How much did he spend on pins?
[Answer]The sell reduced the price of each pin by 20 * .15 = $3. So he paid 20 - 3 = $17 per pin. So the total cost was 17 * 10 = $170. The answer is 170.
Q: There are 36 seagulls on the roof of the Taco Bell. Kids scare 1/4 of them away by throwing stones, and 1/3 of the remaining birds decide to fly to McDonald's parking lot. How many seagulls are left?
A: First find how many birds get scared away by kids: 36 seagulls / 4 = 9 seagulls. Then subtract that number from the starting total: 36 seagulls - 9 seagulls = 27 seagulls. Then divide that number by 3: 27 seagulls / 3 = 9 seagulls. Then subtract that number from the 27 seagulls to find the final number of seagulls: 27 seagulls - 9 seagulls = 18 seagulls. The answer is 18.
Question: Belinda can throw a ball at a speed of 20 feet/second. If the ball flies for 8 seconds before hitting the ground, and Belinda's border collie can run 5 feet/second, how many seconds will it take the border collie to catch up to the ball?
Answer: First find the total distance the ball flies: 20 feet / second * 8 seconds = 160 feet. Then divide that distance by the dog's speed to find how long it takes the dog to catch up to the ball: 160 feet / 5 feet / second = 32 seconds. The answer is 32.
[Question]Lisa is looking to attempt a World Record. She has decided to try and match Joey Chestnut's record of eating 75 full hotdogs, buns included, in 10 minutes. Halfway through the time Lisa has eaten 20 hotdogs. How many hotdogs will she have to eat per minute to at least tie Joey Chestnut's record?
[Answer]Joey Chestnut ate 75 hotdogs to claim the record and Lisa has eaten 20 hot dogs so far, so she still needs to eat 75 - 20 = 55 hotdogs to tie Joey Chestnut. Lisa has a 10 minute time period to eat the hotdogs and half the time has already passed, which means Lisa has 10 / 2 = 5 minutes left until the competition is over. If she needs to eat 55 hotdogs to tie Joey Chestnut and there are 5 minutes left in the competition period then she needs to eat 55 / 5 = 11 hot dogs per minute to have a chance of tying for a win. The answer is 11.
Q: Suraya picked 12 apples more than Caleb, and Caleb picked 5 apples less than Kayla. If Kayla picked 20 apples, how many more apples did Suraya pick than Kayla?
A: Caleb picked 20 - 5 = 15 apples. Suraya picked 12 + 15 = 27 apples. Suraya picked 27 - 20 = 7 apples more than Kayla. The answer is 7.
Question: Gabby is saving money to buy a new makeup set. The makeup set costs $65 and she already has $35. Gabby’s mom gives her an additional $20. How much money does Gabby need to buy the set?
Answer:
Deduct the amount saved from the total cost of the set. $65 - $35 = $30. Deduct the amount of money Gabby received from her mom. $30 - $20 = $10. The answer is 10.