Luigi bought four pizzas for $80. Each pizza was cut into 5 pieces. How much did each piece of pizza cost, in dollars?

4 pizzas at $80 per pizza is $80/4 = $

<<80/4=20>>20 per pizza. If there were 5 pieces per pizza, then each piece was worth $20/5 = $<<20/5=4>>4. #### 4 Bob orders a pizza with 8 slices. He eats half of it and each slice was 300 calories. How many calories did he eat? He ate 8/2=<<8/2=4>>4 slices So he ate 4*300=<<4*300=1200>>1200 calories #### 1200 Sarah uses 1 ounce of shampoo, and one half as much conditioner as shampoo daily. In two weeks, what is the total volume of shampoo and conditioner, in ounces, that Sarah will use? Sarah uses 1+0.5=<<1+0.5=1.5>>1.5 ounces of hair care products daily. Two weeks is 2*7=<<2*7=14>>14 days. In 14 days, Sarah will use 14*1.5=<<14*1.5=21>>21 ounces of hair care products. #### 21 Three fifths of the light bulbs in the kitchen are broken. A third of the light bulbs in the foyer are also broken. If 10 light bulbs in the foyer are broken and there are 35 light bulbs in the kitchen, then how many light bulbs are not broken in both the foyer and kitchen? There are 35/5 = <<35/5=7>>7 light bulbs to every fifth. 7*3 = <<7*3=21>>21 lightbulbs in the kitchen are broken. There are 35-21 = <<35-21=14>>14 light bulbs in the kitchen that are not broken. There are 10*3 = <<10*3=30>>30 light bulbs in the foyer in total. There are 30-10 = <<30-10=20>>20 light bulbs in the foyer that are not broken. There are 14+20 = <<14+20=34>>34 light bulbs that are not broken in both the foyer and kitchen. #### 34 James dumps his whole collection of 500 Legos on the floor and starts building a castle out of them. He uses half the pieces before finishing and is told to put the rest away. He puts all of the leftover pieces back in the box they came from, except for 5 missing pieces that he can't find. How many Legos are in the box at the end? James starts with 500 Legos and uses half of them, leaving 500/2=<<500/2=250>>250 Legos unused. He puts those unused Legos away but since he's missing 5 he only puts 250-5=<<250-5=245>>245 Legos away. #### 245 Tim hires two bodyguards. They each charge $20 an hour. He hires them for 8 hour per day. How much does he pay them in a week if he hires them 7 days a week? It cost him 20*2=$<<20*2=40>>40 an hour for both of them That means he pays 40*8=$<<40*8=320>>320 a day So he pays 320*7=$<<320*7=2240>>2240 a week #### 2240 A farmer has 51 cows. The farmer adds five new cows to its herd and then sells a quarter of the herd. How many cows does the farmer have left? The farmer has 51+5 = <<51+5=56>>56 cows in its herd. The farmer sells 56/4 = <<56/4=14>>14 cows of the herd. The farmer now has 56-14 = <<56-14=42>>42 cows. #### 42 Jezebel needs to buy two dozens of red roses and 3 pieces of sunflowers for a bouquet that she is going to arrange. Each red rose costs $1.50 and each sunflower costs $3. How much will Jezebel pay for all those flowers? Jezebel needs to buy 2 x 12 = <<2*12=24>>24 red roses. Twenty-four red roses will cost 24 x $1.50 = $<<24*1.5=36>>36. Three sunflower will cost 3 x $3 = $<<3*3=9>>9. Thus, Jezebel will pay $36 + $9 = $<<36+9=45>>45 for all those flowers. #### 45 Cyrus has been contracted to write a 500 page book. On his first day, he writes 25 pages and twice that amount on the second day. On the third day he is able to write twice the amount that he did on the second day. On the fourth day, he gets writer's block and is only able to write 10 pages. How many more pages does he need to write? On the second day he wrote twice the amount as the first day, which was 25 pages so 2*25 = <<2*25=50>>50 pages On the third day he wrote twice the amount as he did on the second day, which was 50 pages so 2*50 = <<2*50=100>>100 pages The first day he wrote 25, then 50, then 100 and 10 on the fourth day for a total of 25+50+100+10 = <<25+50+100+10=185>>185 He needs to write 500 pages and has written 185 which means he has 500-185 = <<500-185=315>>315 more pages to write #### 315 Erin put 16 curlers in her hair. One-fourth of the curlers are small pink ones. There are twice as many medium blue curlers as there are pink ones. The rest are large green curlers. How many large green curlers does Erin have in her hair? There are 16 curlers in all and ¼ of them are pink or 16 curlers / 4 = <<16/4=4>>4 pink curlers. There are twice as many blue curlers as there are pink ones, so there are 4 pink x 2 = <<4*2=8>>8 blue curlers. Together, there are 4 pink curlers + 8 blue curlers = <<4+8=12>>12 pink and blue curlers in Erin’s hair. The remaining curlers are green, so of the 16 total curlers – 12 pink and blue curlers = <<4=4>>4 green curlers are in Erin’s hair. #### 4