Whenever Katie and her family eat donuts, they need some coffee to dunk them in. She notices that for each donut they need 2 ounces of coffee. Every pot of coffee she makes contains 12 ounces and costs $3 to make. If her family finishes 3 dozen donuts, how much do they spend on coffee?

He family eats 36 donuts because 3 x 12 =

<<3*12=36>>36 They need 72 ounces of coffee for these because 2 x 36 = <<2*36=72>>72 This is equal to six pots of coffee because 72 / 12 = <<72/12=6>>6 This will cost $18 to make because 6 x 3 = <<6*3=18>>18 #### 18 The cost of Joe's new HVAC system is $20,000. It includes 2 conditioning zones, each with 5 vents. In dollars, what is the cost of the system per vent? Two zones with 5 vents per zone is 2*5=<<2*5=10>>10 vents. Thus, the $20,000 system costs $20,000/10 = $<<20000/10=2000>>2,000 per vent. #### 2,000 Kaiden is collecting cans of soup for the local soup kitchen. He collects 158 cans during his first week and 259 during the second week. If his goal is to collect 500 cans how many more cans of soup does he need to collect? Kaiden collects 158 cans his first week and 259 cans during the second week. 158 + 259 = <<158+259=417>>417 cans of soup Kaiden wants to collect a total of 500 cans, so he still needs 500 - 417 = <<500-417=83>>83 cans of soup #### 83 Matt's entire family was going to spend the week at the lake house for vacation. Matt's family included his mom, dad, his older brother and his wife and their 4 kids. His Uncle Joe and his wife were also coming and would bring their 3 kids. The house only sleeps 4 people. Everyone else would sleep 2 to a tent outside. How many tents would they need? We need to add Matt's entire family together so 1+2+2+4+2+3 = <<1+2+2+4+2+3=14>>14 Only 4 people could sleep in the house so 14-4 = <<14-4=10>>10 people would sleep in a tent Each tent sleeps 2 people and there were 10 people left so 10/2 = <<10/2=5>>5 tents were needed #### 5 Rebecca bought 2 pies for the holiday weekend. Each pie was sliced into 8 slices. Rebecca ate 1 slice of each pie. Her family and friends ate 50% of the remaining pies over the weekend. On Sunday evening Rebecca and her husband each had another slice of pie. How many slices are remaining? She bought 2 pies that had 8 slices each for a total of 2*8 = <<2*8=16>>16 slices Rebecca ate 2 of the 16 slices leaving 16-2 =<<16-2=14>>14 slices Her family and friends at 50% of the pie so they ate 14*.50 = <<14*.50=7>>7 slices There were 14 slices and her family and friends ate 7 slices so that leaves 14-7 = <<14-7=7>>7 slices Sunday night Rebecca and her husband each had a slice from the remaining slices so that leaves 7-2 = <<7-2=5>>5 slices #### 5 Jamie earns $10 an hour by delivering flyers. She delivers flyers 2 days each week. It takes her 3 hours each time she delivers flyers. After delivering flyers for 6 weeks, how much money will she have earned? She spends 2 * 3 hours = <<2*3=6>>6 hours per week delivering flyers. She has spent a total of 6 hours/week * 6 weeks = <<6*6=36>>36 hours delivering flyers. She has earned a total of 36 hours * $10/hour = $<<36*10=360>>360. #### 360 To earn money for her new computer, Tina sells handmade postcards. In a day, she can make 30 such postcards. For each postcard sold, Tina gets $5. How much money did Tina earn if she managed to sell all the postcards she made every day for 6 days? Tina made postcards for 6 days, so she has made 6 days * 30 postcards/day = <<6*30=180>>180 postcards. For every postcard, Tina gets $5, so if she sold every card, she got 180 postcards * $5/postcard = $<<180*5=900>>900. #### 900 James buys a jar of hot sauce. Each serving is .5 ounces. He uses 3 servings every day. if the container is 2 ounces less than 1 quart how many days will it last? A quart is 32 ounces so this jar is 32-2=<<32-2=30>>30 ounces James uses 3*.5=<<3*.5=1.5>>1.5 ounces a day So it last 30/1.5=<<30/1.5=20>>20 day #### 20 Ray has 175 cents in nickels. Ray gives 30 cents to Peter, and he gives twice as many cents to Randi as he gave to Peter. How many more nickels does Randi have than Peter? Ray gave 30*2 = <<30*2=60>>60 cents to Randi. Randi has 60/5 = <<60/5=12>>12 nickels. Peter has 30/5 = <<30/5=6>>6 nickels. Randi has 12-6 = <<12-6=6>>6 more nickels than Peter. #### 6 Florida is starting a promotion where every car that arrives gets one orange per passenger. A family of 4 arrives and gets their oranges. They had planned to stop for a snack later where they would spend $15 in total, but now that they have the oranges they don't have to buy them at the stop. When they get to the stop they see that the oranges would've cost $1.5 each. What percentage of the money they planned to spend did they save instead? The oranges would've cost $6 because 4 x 1.5 = <<4*1.5=6>>6 The proportion of their original spending plan was .4 because 6 / 15 = <<6/15=.4>>.4 They saved 40% of the money they planned to spend because .4 x 100 = <<.4*100=40>>40 #### 40