James decides to replace his car. He sold his $20,000 car for 80% of its value and then was able to haggle to buy a $30,000 sticker price car for 90% of its value. How much was he out of pocket?

How much did he sell his car for? ** He sold his car for 20000*.8=$

<<20000*.8=16000>>16,000 How much did he buy the new car for? ** He bought the new car for 30,000*.9=$<<30000*.9=27000>>27,000 How much was he out of pocket? ** That means he was out of pocket 27,000-16,000=$<<27000-16000=11000>>11,000 #### 11000 Simon wanted to buy flowers that his mom could plant for Mother's Day. The garden center was offering 10% off all purchases. He bought 5 pansies at $2.50 each, one hydrangea that cost $12.50 and 5 petunias that cost $1.00 each. If he paid with a $50 bill, how much change would Simon receive back from his purchase? How much did Simon buy? ** 5 pansies at $2.50 each is 5*2.50 = $<<5*2.5=12.50>>12.50 How much did Simon buy? ** 5 petunias at $1.00 each 5*1 = $<<5*1=5.00>>5.00 How much did Simon spend? ** All total he spends 12.50+12.50+5.00 = $<<12.50+12.50+5.00=30.00>>30.00 How much is the discount? ** The sale is 10% off so 30*.10 = $<<30*.10=3.00>>3.00 How much did Simon spend? ** The purchase total now comes to 30-3 = $<<30-3=27.00>>27.00 How much money does Simon have? ** He pays with a $50 bill so 50-27 = $<<50-27=23.00>>23.00 #### 23 Colton had 72 dolphin stickers. He gave 4 stickers each to 3 friends. He also gave his friend Mandy 2 more than he gave his three friends total. And he gave Justin 10 less than Mandy. How many stickers does Colton have left? How many stickers did Colton give away? ** Colton gave away 4 stickers * 3 friends = <<4*3=12>>12 stickers. How many stickers did Colton give Mandy? ** Colton gave Mandy 2 + 12 stickers = <<2+12=14>>14 stickers. How many stickers did Colton give Justin? ** Colton gave Justin 14 stickers - 10 = <<14-10=4>>4 stickers. How many stickers did Colton give away? ** In total, Colton gave away 12 + 14 + 4 stickers = <<12+14+4=30>>30 stickers. How many stickers does Colton have left? ** Colton's number of total stickers at the end is 72 - 30 = <<72-30=42>>42 stickers. #### 42 Derek has $960 to buy his books for the semester. He spends half of that on his textbooks, and he spends a quarter of what is left on his school supplies. What is the amount of money Derek has left? How much did Derek spend on textbooks? ** Amount spent on textbooks is 960/2 = <<960/2=480>>480 dollars. How much did Derek spend on school supplies? ** Amount spent on school supplies is 480/4 = <<480/4=120>>120 dollars. What is the amount of money Derek has left? ** Amount Derek has left 960-480-120 = <<960-480-120=360>>360 dollars. #### 360 A certain tree was 100 meters tall at the end of 2017. It will grow 10% more than its previous height each year. How long has the tree grown from 2017 until the end of 2019? How many meters will the tree grow in 2018? ** At the end of 2018, the tree will grow 100 x 10/100 = <<100*10/100=10>>10 meters more. How tall will the tree be at the end of 2018? ** Thus, its height at the end of 2018 is 100 + 10 = <<100+10=110>>110 meters. How many meters will the tree grow in 2019? ** At the end of 2019, the tree will grow 110 x 10/100 = <<110*10/100=11>>11 meters more. How tall will the tree be at the end of 2019? ** So, its height at the end of 2019 is 110 + 11 = <<110+11=121>>121 meters. How many meters has the tree grown from 2017 until the end of 2019? ** Therefore, the tree has grown 121 - 100 = <<121-100=21>>21 meters. #### 21 Lisa and Carly go shopping together. Lisa spends $40 on t-shirts then spends half of this amount on jeans and twice this amount on coats. Carly spends only a quarter as much as Lisa on t-shirts but spends 3 times as much on jeans and a quarter of the amount Lisa spent on coats. In dollars, how much did Lisa and Carly spend in total? How much does Lisa spend on jeans? ** Lisa spends $40 on t-shirts / 2 = $<<40/2=20>>20 on jeans. How much does Lisa spend on coats? ** She also spends $40 on t-shirts * 2 = $<<40*2=80>>80 on coats. How much did Lisa spend? ** So Lisa has spent a total of 40 + 20 + 80 = $<<40+20+80=140>>140. How much does Carly spend on t-shirts? ** Carly spends $40 / 4 = $<<40/4=10>>10 on t-shirts. How much does Carly spend on jeans? ** She also spends $20 per pair of jeans * 3 = $<<20*3=60>>60 on jeans. How much does Carly spend on coats? ** She then also spends $80 Lisa’s cost for coats / 4 = $<<80/4=20>>20 on coats. How much did Carly spend? ** So Carly has spent a total of 10 + 60 + 20 = $<<10+60+20=90>>90. How much did Lisa and Carly spend in total? ** Lisa and Carly have therefore spent a total of 140 + 90 = $<<140+90=230>>230. #### 230 A small poultry farm has 300 chickens, 200 turkeys and 80 guinea fowls. A strange, incurable disease hit the farm and every day the farmer lost 20 chickens, 8 turkeys and 5 guinea fowls. After a week, how many birds will be left in the poultry? How many birds are there in total? ** There are 300+200+80 = <<300+200+80=580>>580 birds in total How many birds are lost every day? ** Every day 20+8+5 = <<20+8+5=33>>33 birds are lost How many birds would be lost after a week? ** After a week which is 7 days, 33*7 = <<33*7=231>>231 birds would be lost How many birds would be left in the poultry? ** There would be 580-231 = <<580-231=349>>349 birds left in the poultry #### 349 After tests in California, the total number of Coronavirus cases was recorded as 2000 positive cases on a particular day. The number of cases increased by 500 on the second day, with 50 recoveries. On the third day, the total number of new cases spiked to 1500 with 200 recoveries. What's the total number of positive cases after the third day? How many cases were recorded after the tests? ** When 500 new cases were recorded after the tests, the total number of positive cases increased to 2000 cases + 500 cases = <<2000+500=2500>>2500 cases. How many cases were recorded after the tests? ** With 50 recoveries, the total number of cases reduced to 2500 cases - 50 cases = <<2500-50=2450>>2450 cases. How many cases were recorded after the third day? ** On the third day, with 1500 new cases, the total number of cases became 2450 cases + 1500 cases = <<2450+1500=3950>>3950 cases. How many people have Coronavirus? ** If 200 people recovered from the virus, the total number of people with Coronavirus became 3950 cases - 200 cases = 3750 cases #### 3750 Caleb and his dad went fishing at the lake. Caleb caught 2 trouts and his dad caught three times as much as Caleb. How many more trouts did his dad catch compared to Caleb? How many trouts did his dad catch? ** Caleb’s dad caught 2 x 3 = <<2*3=6>>6 trouts. How many more trouts did his dad catch compared to Caleb? ** His dad caught 6 - 2 = <<6-2=4>>4 more trouts than Caleb. #### 4 Christina has 3 snakes. 1 snake is 2 feet long. Another snake is 16 inches long. The last snake is 10 inches long. How many inches are all of her snakes combined? How many inches is the first snake? ** The first snake is 24 inches because there are 12 inches in a foot. How many inches are all of her snakes combined? ** The snakes are 24+16+10= <<24+16+10=50>>50 inches long. #### 50