Lao is farming chickens. He can sell each chicken for $1.50. A bag of chicken feed weighs 20 pounds and costs $2. Each chicken will need 2 pounds of feed from the time it hatches to the time he sells it. If he makes $65 profit from selling chickens, how many did he sell?

How many pounds of feed does a bag of feed contain? ** A bag of feed is enough for 10 chickens because 20 / 2 =

<<20/2=10>>10 How much does each chicken cost to raise? ** Each chicken costs $.2 to raise because 2 / 10 = <<2/10=.2>>.2 How much profit does each chicken result in? ** Each chicken results in $1.3 of profit because 1.5 - .2 = <<1.5-.2=1.3>>1.3 How many chickens does Lao sell? ** He sells 50 chickens because 65 / 1.3 = <<65/1.3=50>>50 #### 50 While Greg was camping with his family for a week, it rained for 3 days. When he looked at the weather records, he saw that the amount of rain was 3 mm, 6 mm, and 5 mm on the three days. During the same week, it rained 26 mm at his house. How much less rain did Greg experience while camping? How many mm of rain did it rain in 3 days? ** While camping there was 3 + 6 + 5 = <<3+6+5=14>>14 mm of rain in 3 days. How much less rain did Greg experience while camping? ** Greg experienced 26 – 14 = <<26-14=12>>12 mm less rain at the campsite. #### 12 Timothy has $50 to spend at a souvenir shop. He sees some t-shirts that cost $8 each, key chains that sell 3 pieces for $2, and bags that cost $10 each. Timothy buys 2 t-shirts and 2 bags. How many pieces of key chains can he buy with the amount of money he has left? How much do the two t-shirts cost? ** The two t-shirts amount to $8 x 2 = $<<8*2=16>>16. How much do the two bags cost? ** The two bags amount to $10 x 2= $<<10*2=20>>20. How much did Timothy spend? ** So Timothy spent $16 + $20 = $<<16+20=36>>36 for the shirts and bags. How much money does Timothy have left? ** He still has $50 - $36 = $<<50-36=14>>14 left to spend for the key chains. How many pieces of key chains can he buy? ** With the money, he can buy $14/$2 = <<14/2=7>>7 sets of key chains. How many pieces of key chains can he buy? ** Therefore, he can buy 7 x 3 = <<7*3=21>>21 pieces of key chains. #### 21 Cori is 3 years old today. In 5 years, she will be one-third the age of her aunt. How old is her aunt today? How old will Cori be in 5 years? ** In 5 years, Cori will be 3 + 5 = <<3+5=8>>8 years old. How old will Cori’s aunt be in 5 years? ** In 5 years, Cori’s aunt will be 8 x 3 = <<8*3=24>>24 years old. How old is Cori’s aunt today? ** Today, her aunt is 24 - 5 = <<24-5=19>>19 years old. #### 19 Martin is organizing a party, and he invited many of his colleagues. He invited 5 people from his hometown and twice as many people from his school. Martin invited also as many people from his sports club as the sum of people invited from his hometown and his school. The remaining invitations represent 20% of the total previously mentioned. How many people can potentially come to the party Martin is organizing? How many people did Martin invite from his school? ** Martin invited 5 * 2 = <<5*2=10>>10 people from his school. How many invitations did the people from the sports club get? ** People from the sports club got 5 + 10 = <<5+10=15>>15 invitations. How many people did Martin invite in total? ** So in total from the sports club, hometown and school, Martin invited 5 + 10 + 15 = <<5+10+15=30>>30 people. How many invitations are there in total? ** All other invitations are 20% of the previous total, which means 20/100 * 30 = <<20/100*30=6>>6. How many people did Martin invite to his party? ** That means Martin invited to his party 30 + 6 = <<30+6=36>>36 people. #### 36 Derek is watching the construction cranes downtown and is trying to figure out how much taller they have to be than the building they are building. He sees one crane that is 228 feet tall finishing a building that was 200 feet tall. He sees another that is 120 feet tall finishing a building that is 100 feet tall. The final crane he sees is 147 feet tall, finishing a building that is 140 feet tall. On average, what percentage taller are the cranes than the building? How tall is the first crane? ** The first crane is 14 percent taller because if 200 + 200x = 228 then x=.14 How tall is the second crane? ** The second crane is 20 percent taller because if 100 + 100x = 120 then x = .2 How tall is the third crane? ** The third crane is 5 percent taller because if 140 + 140x = 147 then x = .5 How tall are the cranes on average? ** The total percent is 39 because 14 + 20 + 5 = <<14+20+5=39>>39 How tall are the cranes on average? ** The average percent greater the height of the crane is than the building is 13 because 39 / 3 = <<39/3=13>>13 #### 13 Sab and Dane sold 6 pairs of shoes that cost $3 each and 18 shirts that cost $2. How much will each of them earn if they divided their total earning? How much did they earn from selling the shoes? ** They earned 6 x $3 = $<<6*3=18>>18 for the shoes they sold. How much did they earn from selling the shirts? ** They earned 18 x $2 = <<18*2=36>>36 for the shirts they sold. How much did they earn in total? ** So, they earned $18 + $36 = $<<18+36=54>>54 in total for the clothing they sold. How much will each of them earn if they divided their total earning? ** Therefore, Sab and Dane earned $54 / 2 = $<<54/2=27>>27 each. #### 27 Reggie and his brother are having a basketball shooting contest. They each get to take 10 shots. Layups are worth 1 point, free throws are worth 2 points, and anything further away is worth 3 points. Reggie makes 3 layups, two free throws, and one long shot. His brother only shoots long shots and makes 4 of them. How many points does Reggie lose by? How many points does Reggie make off layups? ** Reggie makes 3 points off layups because 3 x 1 = <<3*1=3>>3 How many points does Reggie make off free throws? ** Reggie makes 4 points off free-throws because 2 x 2 = <<2*2=4>>4 How many points does Reggie make off long shots? ** Reggie makes 3 points off long shots because 1 x 3 = <<1*3=3>>3 How many points does Reggie score? ** Reggie scores 10 points because 3 + 4 + 3 =<<3+4+3=10>>10 How many points does Reggie's brother score? ** His brother scores 12 points because 4 x 3 = <<4*3=12>>12 How many points does Reggie lose by? ** Reggie loses by 2 because 12 - 10 = <<12-10=2>>2 #### 2 Carla bought 2 bags of mini peanut butter cups on clearance. Each bag was $6.00 but was 75% off. How much did she spend on 2 bags of candy? How much was each bag discounted? ** Each bag was $6.00 but was marked down 75% for clearance so that's 6*.75 = $<<6*.75=4.50>>4.50 discount How much was each bag? ** Each bag was $6.00 and there is a $4.50 discount so each bag is 6-4.50 = $<<6-4.50=1.50>>1.50 How much did she spend on 2 bags of candy? ** Each bag was marked down to $1.50 a bag and she bought 2 bags for a total of 1.5*2 = $<<1.5*2=3.00>>3.00 #### 3 In a classroom, 10 children have 7 books each. Their teacher brings another 8 books to the classroom. How many books are in the classroom altogether? How many books do the children have at first? ** At first, the children have 10*7=<<10*7=70>>70 books How many books are in the classroom altogether? ** With their teacher, they have 70+8=<<70+8=78>>78 books #### 78