John buys 500 newspapers. Each newspaper sells for $2. He sells 80% of them. He buys them all for 75% less than the price at which he sells them. How much profit does he make?

How many newspapers does John sell? ** He sells 500*.8=

<<500*.8=400>>400 newspapers How much does John sell the newspapers for? ** He sells them for 400*2=$<<400*2=800>>800 How much does John get a discount on the newspapers? ** He gets a discount of 2*.75=$<<2*.75=1.5>>1.5 on the newspapers How much does John buy the newspapers for? ** So he buys them for 2-1.5=$<<2-1.5=.5>>.5 How much did John spend buying the newspapers? ** So he spent 500*.5=$<<500*.5=250>>250 buying them How much profit does John make? ** That means he made a profit of 800-250=$<<800-250=550>>550 #### 550 Prejean's speed in a race was three-quarters that of Rickey. If they both took a total of 70 minutes to run the race, calculate the total number of minutes that Rickey took to finish the race. How many minutes did Rickey take to finish the race? ** Let's say Rickey took t minutes to finish the race. How many minutes did Prejean take to finish the race? ** If Prejean's speed in the race was three-quarters that of Rickey, and Rickey took t minutes to finish the race, the time that Prejean took to finish the race is 3/4*t=3/4t How many minutes did Rickey and Prejean take to finish the race? ** Together, Rickey and Prejean took t+3/4t = 70 How many hours did Rickey and Prejean take to finish the race? ** They took 1 3/4 t hours=70 to finish the race How many hours did Rickey and Prejean take to finish the race? ** This is 7/4t=70 How many hours did Rickey and Prejean take to finish the race? ** t=70*4/7 How many minutes did Rickey take to finish the race? ** The time that Rickey took to finish the race is t= <<40=40>>40 minutes #### 40 Abigail thinks she has some lost some money out of her purse. She had $11 in her purse at the start of the day, and she spent $2 in a store. If she now has $3 left, how much money has she lost? How much money did Abigail have left after going shopping? ** After going shopping, Abigail had 11 – 2 = <<11-2=9>>9 dollars left. How much money did Abigail lose? ** This means she lost 9 – 3 = <<9-3=6>>6 dollars. #### 6 There are 10 bags with 30 oranges each on a truck. A total of 50 pieces of oranges are rotten. Thirty pieces of oranges will be kept for making orange juice and the rest will be sold. How many pieces of oranges will be sold? How many pieces of oranges are there? ** There are a total of 10 x 30 = <<10*30=300>>300 pieces of oranges in a truck. How many pieces of oranges will not be sold? ** A total of 50 + 30 = <<50+30=80>>80 pieces of oranges will not be sold. How many pieces of oranges will be sold? ** Thus, 300 - 80 = <<300-80=220>>220 pieces of oranges will be sold. #### 220 The chocolate factory produces 50 candies per hour. It has to fulfill an order and produce 4000 candies. How many days will it take to complete the order if the factory works for 10 hours every day? How many hours will it take to make all the candy? ** It will take 4000 candies / 50 candies/hour = <<4000/50=80>>80 hours to make all the candy How many days will it take to complete the order? ** It will take 80 hours / 10 hours/day = <<80/10=8>>8 days to complete the order #### 8 Philip is a painter. He makes 2 paintings per day. If he already has 20 paintings, how many paintings in total will he have after 30 days? How many paintings will Philip make after 30 days? ** The number of paintings Philip will make after 30 days is 2 paints/day * 30 days = <<2*30=60>>60 paintings. How many paintings in total will Philip have after 30 days? ** Then, the total number of his paintings will be 60 paintings + 20 paintings = <<60+20=80>>80 paintings. #### 80 Christine makes money by commission rate. She gets a 12% commission on all items she sells. This month, she sold $24000 worth of items. Sixty percent of all her earning will be allocated to her personal needs and the rest will be saved. How much did she save this month? How much did Christine earn in commission? ** This month, Christine earned a commission of 12/100 x $24000 = $<<12/100*24000=2880>>2880. How much did Christine allocate on her personal needs? ** She allocated 60/100 x $2880 = $<<60/100*2880=1728>>1728 on her personal needs. How much did Christine save this month? ** Therefore, she saved $2880 - $1728 = $<<2880-1728=1152>>1152 this month. #### 1152 Maria goes to the coffee shop 2 times a day. Every time she goes to the coffee shop, she orders 3 cups of coffee. How many cups of coffee does she order per day? How many times does Maria go to the coffee shop? ** Maria goes to the coffee shop twice a day. How many cups of coffee does Maria order per day? ** If she orders 3 cups of coffee each time she goes to the coffee shop, it means she orders 2 * 3 = <<3*2=6>>6 cups of coffee a day. #### 6 Grandma Molly created statues of turtles for her front lawn. The first year, she created 4 statues and placed them on her lawn. The second year, she quadrupled the number of statues on her front lawn. In the third year, she added another 12 statues to the front lawn, but a hail storm broke 3 of the statues, which she threw away. In the fourth year, she added twice as many new statues as had been broken the year before. At the end of the four years, how many turtle statues were on her front lawn? How many statues did Grandma Molly create in the second year? ** The second year, she quadrupled the number of statues in her front lawn, adding to the original 4 and bringing the total number to 4*4=<<4*4=16>>16 statues. How many statues did Grandma Molly create in the third year? ** In the third year, she added another 12 statues, bringing the total number to 16+12=28 statues. How many statues did Grandma Molly create in the third year? ** But a hail storm broke 3, reducing the number to 28-3=<<28-3=25>>25 statues. How many statues did Grandma Molly create in the fourth year? ** In the fourth year, she added twice as many new statues as had been broken the year before, adding 2*3=<<2*3=6>>6 statues. How many statues did Grandma Molly create in the fourth year? ** Thus, the addition of these 6 statues brought the total number of statues to 25+6=<<25+6=31>>31 statues. #### 31 Selina is selling some of her old clothes to a second-hand store. They will buy her pants for $5 each, her shorts for $3 each, and her shirts for $4 each. She sells 3 pairs of pants, 5 pairs of shorts, and some shirts. After she gets her money, she sees 2 shirts that she likes which cost $10 each and buys them. She leaves the store with $30. How many shirts did she sell to the store? How much did the shirts cost? ** The shirts she bought cost her $20 because 2 x 10 = <<2*10=20>>20 How much did she earn? ** She earned $50 selling her clothes because 20 + 30 = <<20+30=50>>50 How much did she make off pants? ** She made $15 off pants because 3 x 5 = <<3*5=15>>15 How much did she make off shorts? ** She made 15 dollars from shorts because 3 x 5 = <<3*5=15>>15 How much did she make off shirts? ** She made $20 off shirts because 50 - 15 - 15 = <<50-15-15=20>>20 How many shirts did she sell? ** She sold 5 shirts because 20 / 4 = <<20/4=5>>5 #### 5