The perimeter of a square-shaped piece of paper is 20 cm shorter than the height of a computer screen. How many cm is the height of the screen if the side of the square paper is 20 cm?

How many cm is the perimeter of the square paper? ** The perimeter of a square is found by 4*side, which means the square paper has a perimeter of 4*20 =

<<4*20=80>>80 How many cm is the height of the computer screen? ** Since the perimeter of the square is 20 cm shorter than the height of the computer screen, the height of the computer screen is 20+80 = <<20+80=100>>100cm. #### 100 Tony wants to build the longest rope he possibly can, so he collects all the rope in his home. He finds an 8-foot rope, a 20-foot rope, three 2 foot ropes, and a 7-foot rope. each knot between the ropes makes him lose 1.2 foot per knot. How long is his rope when he's done tying them all together? How many feet of rope does Tony have? ** The combined length of all the rope is 41 feet because 8 + 20 + (2 x 3) + 7 = <<8+20+(2*3)+7=41>>41 How many feet does Tony lose from the knots? ** He loses 6 feet from the knots because 5 x 1.2 = <<5*1.2=6>>6 How long is his rope when he's done tying them all together? ** The final length is 35 feet because 41 - 6 = <<41-6=35>>35 #### 35 Ben works 8-hour shifts in a furniture shop. It takes him 5 hours to build 1 rocking chair. How many chairs can he build in 10 days? How many hours does Ben work in 10 days? ** He works 8 hours a day for 10 days means he works 8*10 = <<8*10=80>>80 hours How many rocking chairs does Ben build in 10 days? ** It takes him 5 hours to build one rocking chair so over 80 hours he builds 80/5 = <<80/5=16>>16 rocking chairs #### 16 Mason opens the hood of his car and discovers that squirrels have been using his engine compartment to store nuts. If 2 busy squirrels have been stockpiling 30 nuts/day and one sleepy squirrel has been stockpiling 20 nuts/day, all for 40 days, how many nuts are in Mason's car? How many nuts do the two busy squirrels gather per day? ** First find the number of nuts the two busy squirrels gather per day: 2 squirrels * 30 nuts/day/squirrel = <<2*30=60>>60 nuts/day How many nuts do the two busy squirrels and the sleepy squirrel gather per day? ** Then add the number the sleepy squirrel gathers each day: 60 nuts/day + 20 nuts/day = <<60+20=80>>80 nuts/day How many nuts are in Mason's car? ** Then multiply the number of nuts gathered daily by the number of days to find the total number of nuts gathered: 80 nuts/day * 40 days = <<80*40=3200>>3200 nuts #### 3200 Sandi had $600. She spent half of it at a farmer’s market. Gillian spent $150 more than three times Sandi's total. What is the total that Gillian spent at the farmer’s market? How much did Sandi spend at the farmer's market? ** Sandi spent 600/2 = <<600/2=300>>300 dollars at the farmer’s market. How much did Gillian spend at the farmer's market? ** Gillian spent 300*3+150 = <<300*3+150=1050>>1050 dollars at the farmer’s market. #### 1050 Troy had 300 straws. He fed 3/5 of the straws to the adult pigs and an equal number of straws to the piglets. If there were 20 piglets, how many straws did each piglet eat? How many straws did the adult pigs eat? ** The adult pigs ate 3/5*300 = <<3/5*300=180>>180 straws. How many straws did the piglets share? ** The total number of straws that the piglets shared is 300-180 = <<300-180=120>>120 How many straws did each piglet eat? ** Since there were 20 piglets, each piglet ate 120/20 = <<120/20=6>>6 straws #### 6 Margaux owns a money lending company. Her friend pays her $5 per day, her brother $8 per day, and her cousin $4 per day. How much money will she collect after 7 days? How much money will her friend pay after 7 days? ** Her friend will pay $5 x 7 = $<<5*7=35>>35 after 7 days. How much money will her brother pay after 7 days? ** Her brother will pay $8 x 7 = $<<8*7=56>>56 after 7 days. How much money will her cousin pay after 7 days? ** Her cousin will pay $4 x 7 = $<<4*7=28>>28 after 7 days. How much money will she collect after 7 days? ** Therefore, she will be able to collect $35 + $56 + $28 = $<<35+56+28=119>>119 after 7 days. #### 119 Audrey's key lime pie calls for 1/4 cup of key lime juice but she likes to double this amount to make it extra tart. Each key lime yields 1 tablespoon of juice. There are 16 tablespoons in 1 cup. How many key limes does Audrey need? How much lime juice does Audrey need? ** Her recipe calls for 1/4 cup of juice but she wants to double that so she needs 1/4+1/4 = 1/2 cup of lime juice How many tablespoons of juice does Audrey need? ** 16 tablespoons are in 1 cup and she only needs 1/2 cup so she needs 16*.5 = <<16*.5=8>>8 tablespoons of juice How many key limes does Audrey need? ** 1 key lime yields 1 tablespoon of juice and she needs 8 tablespoons so she needs 1*8 = <<1*8=8>>8 key limes #### 8 Sue works in a factory and every 30 minutes, a machine she oversees produces 30 cans of soda. How many cans of soda can one machine produce in 8 hours? How many sets of 30 minutes are there in 8 hours? ** Since there are 2 sets of 30 minutes in an hour, then in 8 hours there are 8 x 2 = <<8*2=16>>16 sets of 30 minutes. How many cans of soda can one machine produce in 8 hours? ** Hence, a machine that Sue oversees can produce 30 cans x 16 = <<30*16=480>>480 cans of soda in 8 hours. #### 480 The bus started its route. At its first stop, 7 people got on. At the second stop, 3 people got off, and 5 people got on. At the third stop, 2 people got off, and 4 people got on. How many passengers are now on the bus? How many people are on the bus after the first stop? ** There are 7 people on the bus after the first stop. How many people are on the bus after the second stop? ** There are 7+5-3=<<7+5-3=9>>9 people on the bus after the second stop. How many people are on the bus after the third stop? ** There are 9+4-2=<<9+4-2=11>>11 people on the bus after the third stop. How many passengers are now on the bus? ** 11 passengers are now on the bus. #### 11