A construction company is building 2 apartment buildings with 12 floors each. The apartments are almost ready to sell but all of them need doors to be completed. Each floor has 6 apartments, and each apartment needs 7 doors in total. How many doors does the company need to buy?

The number of floors is 12 floors/building x 2 buildings = 24 floors

The number of apartments is 6 apartments/floor x 24 floors =

<<6*24=144>>144 apartments The company has to buy 7 doors/apartment x 144 apartments = <<7*144=1008>>1008 doors #### 1008 Codger is a three-footed sloth. He has a challenging time buying shoes because the stores only sell the shoes in pairs. If he already owns the 3-piece set of shoes he is wearing, how many pairs of shoes does he need to buy to have 5 complete 3-piece sets of shoes? To have five 3-piece sets, he needs to have a total of 5*3=<<5*3=15>>15 shoes, If he already owns three shoes, then he needs to buy 15-3=<<15-3=12>>12 additional shoes. Since each pair of shoes includes two shoes, he needs to buy a total of 12/2=<<12/2=6>>6 pairs of shoes. #### 6 James buys 2 notebooks with 50 pages each. He pays $5. How many cents did each page cost? He bought 2*50=<<2*50=100>>100 pages It cost 5*100=<<5*100=500>>500 cents So he spent 500/100=<<500/100=5>>5 cents per page #### 5 Marcy keeps a 2-liter bottle of water by her desk. She takes a sip every five minutes, and each sip is 40 ml. How many minutes does it take her to drink the whole bottle of water? First find the total number of milliliters in the bottle: 2 liters * 1000 ml/liter = <<2*1000=2000>>2000 ml Then divide the total number of milliliters by the amount she drinks per sip: 2000 ml / 40 ml = <<2000/40=50>>50 sips Then multiply the number of sips by the time per sip to find the time it takes her to drink the bottle: 50 sips * 5 minutes/sip = <<50*5=250>>250 minutes #### 250 Haily wants to go to the salon and do her nails, cut her hair and do a facial cleaning. She doesn't want to spend much, so she called 3 salons to get their prices: Gustran Salon, Barbara's Shop, and The Fancy Salon. At Gustran Salon, the haircut is $45, the facial cleaning is $22 and the nails are $30. At Barbara's shop, the nails are $40, the haircut is $30 and the facial cleaning is $28. And, at the Fancy Salon, the facial cleaning is $30, the haircut is $34 and the nails are $20. How much would Haily spend at the cheapest salon? So first, we should add the prices of all salons. At Gustran Salon, the total price is: $45 + $22 + $30 = $<<45+22+30=97>>97 The total price at Barbara's shop is: $40 + $30 + $28 = $<<40+30+28=98>>98 The total price at The Fancy Salon is: $30 + $34 + $20 = $<<30+34+20=84>>84 At Gustran salon she would spend $97, at Barbara's Shop she would spend $98, and at The Fancy Salon she would spend $84, so she would spend $84 at the cheapest salon. #### 84 Mike spent 37 dollars on notebooks. He bought a total of 12 notebooks. He bought 3 red notebooks at 4 dollars each, 2 green notebooks at 2 dollars each, and the rest were blue notebooks. How much does each blue notebook cost? He bought 12-3-2=<<12-3-2=7>>7 blue notebooks. He paid 3*$4=$<<3*4=12>>12 for red notebooks He paid 2*$2=$<<2*2=4>>4 for green notebooks He spent $37-$12-$4=$<<37-12-4=21>>21 on blue notebooks. Each blue notebook costs $21/7=$<<21/7=3>>3. #### 3 Janet wanted to move out of her parents' house and rent her own apartment. She had $2,225 saved. She found an apartment that cost $1,250 per month that was perfect for her. The landlord said that she needed to be able to pay 2 months' rent in advance to rent the place and she would also need to put down a deposit of $500. How much more money did Janet need in order to rent the apartment? To move in, Janet had to pay 2 months worth of rent so that would cost 2*1250 = $<<2*1250=2500>>2,500 On top of the rent she needed to pay a deposit of $500 so 2500+500 = $<<2500+500=3000>>3,000 total to rent the apartment If it cost $3000 to move in and she had $2225 then she need 3000-2225 = $<<3000-2225=775>>775 more #### 775 Gretchen is a scuba diver. She likes to hunt for treasure on the ocean's floor, but when she finds something to keep, she must carry it back to the surface of the water to give it to her shipmate on the boat. She can only carry 3 objects at a time while she swims underwater. If she finds 17 objects underwater, what is the fewest number of trips to the surface of the water she must take to carry all 17 objects to the boat? To carry 17 objects, three at a time, it takes 17/3 = 5 and 2/3 loads. This calculation means that she takes 5 trips carrying 3 objects per trip, and then she takes one additional trip carrying only two objects. Thus, in reality, she takes 5 + 1 = <<5+1=6>>6 trips to the surface. #### 6 To support the school outreach program, Einstein wants to raise $500 by selling snacks. One box of pizza sells for $12, a pack of potato fries sells for $0.30, and a can of soda at $2. Einstein sold 15 boxes of pizzas, 40 packs of potato fries, and 25 cans of soda. How much more money does Einstein need to raise to reach his goal? Einstein collected 15 x $12 = $<<15*12=180>>180 for selling pizzas. He collected 40 x $0.30 = $<<40*0.30=12>>12 for the 40 packs of potato fries. He collected 25 x $2 = $<<25*2=50>>50 for the 25 cans of soda. Thus, the total amount section Einstein collected was $180 + $12 +$50 = $<<180+12+50=242>>242. Therefore, Einstein needs $500 - $242 = $<<500-242=258>>258 more to reach the goal. #### 258 A small pizza can gives 4 slices, and a large pizza gives 8 slices. George purchased 3 small and 2 large pizzas. George would like to eat 3 pieces. His friend Bob would like to eat one more piece than George. Susie will eat half as many as Bob. Bill, Fred and Mark would each like 3 pieces. How many slices of pizza will be left over? George has 3 small pizzas * 4 slices = <<3*4=12>>12 pieces. George also has 2 large pizzas * 8 slices = <<2*8=16>>16 slices. Total, George has 12 + 16 slices = <<12+16=28>>28 slices of pizza. Bob will eat 3 slices + 1 = <<3+1=4>>4 slices. Susie will eat 1/2 * 4 slices = <<1/2*4=2>>2 slices. Bob, Fred and Mark will eat in total 3 + 3 + 3 = <<3+3+3=9>>9 pieces. Total slices of pizza eaten will be 3 + 4 + 2 + 9 = <<3+4+2+9=18>>18 pieces. Total pizza slices remaining will be 28 pieces - 18 = <<28-18=10>>10 slices left. #### 10