John buys 3 t-shirts that cost $20 each. He also buys $50 in pants. How much does he spend?
How much does John spend on t-shirts? ** He spends 20*3=$
<<20*3=60>>60 on t-shirts How much does John spend in total? ** So he spends 60+50=$<<60+50=110>>110 in total #### 110 John injures his shoulder while lifting weights. After the injury, his bench press goes down 80%. After a bit of training, he manages to triple the weight he can bench. If he started with a 500-pound bench press, what is it now? How much did John lose from his bench press? ** He lost 500*.8=<<500*.8=400>>400 pounds from his bench How much did John's bench press go down? ** So his bench went to 500-400=<<500-400=100>>100 pounds How much did John's bench press go up? ** After training it increased to 100*3=<<100*3=300>>300 pounds #### 300 Silvia wants to buy a new guitar online. The price of the guitar has a suggested retail price of $1000. Guitar Center has a special deal of 15% off but has a shipping fee of $100. Sweetwater has a 10% off deal with free shipping. How much will she save by buying from the cheaper store compared to the other store? How much would the discount be? ** The discount saved when buying from Guitar Center would be $1000 * 15% = $<<1000*15*.01=150>>150. How much would the total cost be? ** The total cost when buying from Guitar Center would be $1000 - $150 discount + $100 shipping = $950. How much would the discount be? ** The discount when buying from Sweetwater would be $1000 * 10% = $<<1000*10*.01=100>>100. How much would the total cost be? ** The total cost when buying from Sweetwater would be $1000 - $100 discount + $0 shipping = $<<1000-100-0=900>>900. How much would she save by buying from the cheaper store compared to the other store? ** Thus, Silvia would save $950 - $900 = $<<950-900=50>>50 when buying from Sweetwater. #### 50 In a Geometry exam, Madeline got 2 mistakes which are half as many mistakes as Leo. Brent scored 25 and has 1 more mistake than Leo. What is Madeline's score? How many mistakes did Leo get? ** Leo got 2 x 2 = <<2*2=4>>4 mistakes. How many mistakes did Brent get? ** So, Brent got 4 + 1 = <<4+1=5>>5 mistakes. What is the perfect score? ** This means that 25 + 5 = <<25+5=30>>30 is the perfect score. What is Madeline's score? ** Hence, Madeline got a score of 30 - 2 = <<30-2=28>>28. #### 28 Addilynn went to the grocery store and bought six dozen eggs for use in her house. After two weeks, she used half of the eggs, then accidentally broke 15 of the remaining eggs while moving them to clean the shelves. How many eggs are left on the shelf? How many eggs did Addilynn buy? ** Since a dozen has 12 eggs, the total number of eggs that Addilynn bought is 6 dozen * 12 eggs/dozen = <<6*12=72>>72 eggs. How many eggs are left? ** If she used half of the eggs, the number of eggs left is 72 eggs / 2 = <<72/2=36>>36 eggs. How many eggs did Addilynn break? ** While moving the eggs to clean the shelves, she broke 15 eggs, leaving 36 eggs - 15 eggs = <<36-15=21>>21 eggs. #### 21 Jason has six fish in his aquarium. He realizes that every day the number of fish doubles. On the third day he takes out one-third of the fish. On the fifth day he takes out one-fourth of the fish. On the seventh day he adds 15 more fish. How many fish in total does he have? How many fish were there on the third day? ** Start by finding how many fish were in the aquarium on the third day 6 * 2 * 2 = <<6*2*2=24>>24. How many fish did Jason take out on the third day? ** On day three, Jason took out one-third of the fish 24 / 3 = <<24/3=8>>8. How many fish does Jason have at the end of day three? ** So at the end of day three, he has 24 - 8 = <<24-8=16>>16 fish. How many fish does Jason have on day five? ** On day five he has 16 * 2 * 2 = 64 fish, but he takes out one-fourth. How many fish did Jason take out on day five? ** So he took out 64 / 4 = <<64/4=16>>16 fishes. How many fish does Jason have at the end of day five? ** So at the end of day five, he has 64 - 16 = <<64-16=48>>48 fish. How many fish does Jason have on day seven? ** On day seven he has 48 * 2 * 2 = <<48*2*2=192>>192 fish. How many fish in total does he have? ** He adds in 15 more, so he has 192 + 15 = <<192+15=207>>207 fish in total. #### 207 There are 90 students who have lunch during period 5. Today, two-thirds of the students sat in the cafeteria, while the remainder sat at the covered picnic tables outside. But some yellow-jackets were attracted to their food, and so one-third of the students outside jumped up and ran inside to the cafeteria, while 3 of the students in the cafeteria went outside to see what all the fuss was about. How many students are now in the cafeteria? How many students were originally inside the cafeteria? ** Originally, there were 90*2/3=<<90*2/3=60>>60 in the cafeteria. How many students were originally outside the cafeteria? ** Originally, there were 90-60=<<90-60=30>>30 outside the cafeteria. How many students ran inside? ** Then 30*1/3=<<30*1/3=10>>10 ran inside What was the net change in students inside the cafeteria, due to the yellow-jackets? ** The number of students inside the cafeteria grew by 10-3=<<10-3=7>>7. How many students are now in the cafeteria? ** There are now 60+7=<<60+7=67>>67 students in the cafeteria. #### 67 Tom and Tim both brought 4, six-sided dice to school. How many total sides are there? How many dice are there? ** There are 8 total dice because 4 plus 4 equals 8 How many sides are there? ** There are 48 sides because 8 times six equals <<8*6=48>>48 #### 48 Giselle had 20 female doves in a birdhouse. After a month, the doves laid 3 eggs each. If 3/4 of the eggs hatched, calculate the total number of doves Giselle has now. How many eggs are in the birdhouse? ** If Giselle had 20 doves that laid 3 eggs each, the total number of eggs in the birdhouse is 20*3 = <<20*3=60>>60 eggs. How many birds hatched? ** If 3/4 of the eggs hatched into birds, their total number is 3/4*60 = <<3/4*60=45>>45 How many birds are in the birdhouse? ** In the birdhouse, there are 20 initial doves + 45 new squabs = <<20+45=65>>65 birds #### 65 Tim is stuck in traffic for twice as long as he was driving. He drove 5 hours. How long was the trip? How long was Tim stuck in traffic? ** He was stuck in traffic for 5*2=<<5*2=10>>10 hours How long was the trip? ** So his trip took 10+5=<<10+5=15>>15 hours #### 15