Stan can type 50 words per minute. He needs to write a 5-page paper. Each page will contain 400 words. Each hour that he types he needs to drink 15 ounces of water. How much water does he need to drink while writing his paper?

Stan needs to write 2,000 words because 5 x 400 =

<<5*400=2000>>2,000 This will take him 40 minutes because 2,000 / 50 = <<2000/50=40>>40 He drinks 1/4 an ounce per minute because 15 / 60 = 1/4 He will drink 10 ounces of water while writing the paper because 40 x (1/4) = <<40*(1/4)=10>>10 #### 10 Oliver has 4 friends that he is inviting to a party at the arcade. Game tokens cost 30 for $1. Each game costs 2 tokens. If he wants all his friends to get to play 60 games each, how much will it cost? He needs to buy enough tokens for 240 games because 4 x 60 = <<4*60=240>>240 He needs to buy 480 tokens because 2 x 240 = <<2*240=480>>480 He needs to spend 160 because 480 / 30 = 16 #### 16 Ryan has 30 stickers. Steven has thrice as many stickers as Ryan. Terry has 20 more stickers than Steven. How many stickers do they have altogether? Steven has 3 x 30 = <<3*30=90>>90 stickers. And, Terry has 90 + 20 = <<90+20=110>>110 stickers. Therefore, they have 30 +90 + 110 = <<30+90+110=230>>230 stickers altogether. #### 230 There are 120 crayons in a box. One third of the crayons are new, 20% are broken, and the rest are slightly used. How many are slightly used? New:120/3=<<120/3=40>>40 crayons Broken:120(.20)=24 crayons Slightly Used:120-40-24=<<120-40-24=56>>56 crayons #### 56 Jennifer is building tanks to hold her goldfish. She built 3 tanks that will hold 15 fish each, heated, and filled them. She plans to build the rest of the tanks equipped with heaters, and they will hold 10 fish each. If she needs to build enough tanks to house a total of 75 fish, how many more will she need to build? With the tanks already built it has room for 3 tanks * 15 fish/tank = <<3*15=45>>45 fish. The total of fish that still lack space is 75 fish - 45 fish = <<75-45=30>>30 fish. This means Jennifer needs 30 fish / 10 fish/tank = <<30/10=3>>3 tanks of 10 fish. #### 3 Mark got a 5% raise at his job. Before the raise, he earned 40 dollars per hour. He works 8 hours per day for 5 days per week. His old bills used to be 600 dollars a week but he decided to add a hundred dollar a week personal trainer. How much does he have leftover a week? After the raise he earns 40*1.05=<<40*1.05=42>>42 dollars an hour He works 8 hours per day so earns 42*8=<<8*42=336>>336 per day He works 5 days per week so he earns 336*5=<<336*5=1680>>1680 a week His expenses after adding the personal trainer are 600+100=<<600+100=700>>700 a week So he has 1680-700=<<1680-700=980>>980 left over #### 980 Vikki worked 42 hours in one week. Her hourly pay rate is $10. From her weekly earnings, 20% is deducted as tax, 5% is deducted as insurance cover, and $5 is deducted for union dues. How much money, in dollars, does Vikki take home after deductions? Vikki earnt 10 × $42 = $<<10*42=420>>420 in one week. She then gets taxed $420 × 0.2 = $<<420*0.2=84>>84. She also loses $420 × 0.05 = $<<420*0.05=21>>21 due to insurance. Vikki also pays $5 in union dues. In total Vikki loses $84 + $21 + $5 = $<<84+21+5=110>>110 because of deductions. Her final total pay after deductions is $420 - $110 = $<<420-110=310>>310 #### 310 Jed’s family wants to buy 6 different board games. Each board game costs $15 and Jed paid using a $100 bill. If the cashier gave Jed only $5 bills for his change, how many bills did Jed receive? Jed paid $15 x 6 = $<<15*6=90>>90 for the 6 board games. He has $100 - $90 = $<<100-90=10>>10 change. Therefore, Jed received$ 10/$5 = <<10/5=2>>2 $5 bills. #### 2 Jessica has a basic cable television service for $15 per month. If she adds the movie channels, it will cost an additional $12 per month. The sports channels cost $3 less per month than the movie channels. If Jessica adds the movie channels and the sports channels, what will her total monthly payment be? The sports channels cost $12 - $3 = $<<12-3=9>>9 per month. Jessica has to pay $15 + $12 + $9 = $<<15+12+9=36>>36 in total per month. #### 36 The sum of the ages of two friends, Alma and Melina, is twice the total number of points Alma scored in a test. If Melina is three times as old as Alma, and she is 60, calculate Alma's score in the test? If Melina is three times as old as Alma, and she is 60, Alma is 60/3 = <<60/3=20>>20 years old. The sum of their ages is 60+20 = <<60+20=80>>80 years. Since the sum of Alma and Melina's age is twice the total number of points Alma scored in a test, Alma's score in the test was 80/2 = <<80/2=40>>40 points. #### 40