For a wedding, chairs were arranged in 7 rows with 12 chairs in each row. Some people arrived late and grabbed 11 extra chairs, placing them at the back. How many chairs were there altogether?

At first, there were 7*12=

<<7*12=84>>84 chairs. Later, there were 84+11=<<84+11=95>>95 chairs altogether. #### 95 A superhero can use superhuman speed to run 10 miles in 4 minutes. The supervillain has an Evil-Mobile that drives 100 miles per hour. How many miles farther can the superhero run in an hour than the supervillain can drive? There are 60 minutes in an hour, so the superhero will run 60 / 4 = <<60/4=15>>15 intervals of 10 miles in an hour. Thus, the superhero can run 15 * 10 = <<15*10=150>>150 miles in an hour. The superhero can run 150 - 100 = <<150-100=50>>50 miles farther than the supervillain can drive in an hour. #### 50 Trevor is a comic book illustrator. In the past three months, he has drawn 220 pages of the comic. The comic he illustrates releases a new issue once a month. The first and second months’ issues were the same number of pages, but the third month’s issue was four pages longer than either of the others. How many pages was the first issue of the comic? Let P be the number of pages of the first issue of the comic. The second issue is the same number of pages, so the first and second issues are P + P = 2P pages. The third issue is 4 pages longer, so it is P + 4 pages. All three issues are 2P + P + 4 = 3P + 4 = 220 pages long. Thus, 3P = 220 - 4 = 216 pages. Therefore, the first issue of the comic was P = 216 / 3 = <<216/3=72>>72 pages. #### 72 James can make 4 hats out of one yard of velvet. He needs three yards of velvet to make a cloak. How much velvet does he need to make 6 cloaks and 12 hats? First find the total amount of velvet James uses on the hats: 12 hats / 4 hats/yard = <<12/4=3>>3 yards Then find the total amount of velvet he needs to make the cloaks: 6 cloaks * 3 yards/cloak = <<6*3=18>>18 yards Then add those two amounts to find the total amount of velvet he needs: 3 yards + 18 yards = <<3+18=21>>21 yards #### 21 A chef needs to make french fries. He can get 25 fries out of 1 potato. He has 15 potatoes and he needs 200 fries. How many potatoes will he have leftover? To make 200 fries he will need 200 / 25 fries per potato = <<200/25=8>>8 potatoes. He has 15 potatoes - 8 potatoes = <<15-8=7>>7 leftover potatoes. #### 7 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? Bella receives 2 x 12 = <<2*12=24>>24 roses from her parents. She receives 2 x 10 = <<2*10=20>>20 roses from her friends. She receives a total of 24 + 20 = <<24+20=44>>44 roses. #### 44 Phillip wants to make pickles with the supplies he finds at home. He has 4 jars, 10 cucumbers, and 100 oz of vinegar. Each cucumber makes six pickles. Each jar can hold 12 pickles. It takes 10 ounces of vinegar per jar of pickles. When he is all done making as many pickles as he has supplies for, how many ounces of vinegar are left? The jars allow him to make 48 pickles because 4 x 12 = <<4*12=48>>48 The cucumbers allow him to make 60 pickles because 10 x 6 = <<10*6=60>>60 The vinegar allows him to make 10 jars of pickles because 100 / 10 = <<100/10=10>>10 The vinegar is enough to make 60 pickles because 10 x 6 = <<10*6=60>>60 He can make 48 pickles because 48 < 60 He needs 4 jars to make this because 48 / 12 = <<48/12=4>>4 He needs 40 ounces of vinegar because 4 x 10 = <<4*10=40>>40 He has 60 ounces remaining because 100 - 40 = <<100-40=60>>60 #### 60 Mark has to wait 4 days for his first coronavirus vaccine appointment. Then he has to wait 20 days for his second vaccine appointment. Then he has to wait 2 weeks for the vaccine to be fully effective. How many days does Mark have to wait in total? 2 weeks have 2 weeks* 7 days per week = <<2*7=14>>14 days Counting the days until the first and second vaccine, and the days to the vaccine to be fully effective, Mark has to wait 4 days + 20 days + 14 days = <<4+20+14=38>>38 days #### 38 Each purple book has 230 pages. Each orange book contains 510 pages. Mirella read 5 purple books and 4 orange books. How many more orange pages did she read than purple pages? Purple = 5 * 230 = <<5*230=1150>>1150 pages Orange = 4 * 510 = <<4*510=2040>>2040 pages 2040 - 1150 = <<2040-1150=890>>890 Mirella read 890 more orange pages than purple pages. #### 890 A train takes 4 hours to reach a destination at a speed of 50 miles per hour. How long would it take if it traveled at 100 miles per hour instead? The distance to the destination is 4 hours * 50 miles/hour = <<4*50=200>>200 miles. Traveling at 100 miles per hour, it will take 200 miles / (100 miles/hour) = <<200/(100)=2>>2 hours. #### 2