Dave weighs 175 pounds and can bench press three times his body weight. Craig can only bench press 20% of the amount Dave can. Mark is new and can bench press 50 pounds less than Craig. How much can Mark bench press?

How much can Dave bench press? ** Dave weighs 175 pounds and can bench press three times his body weight, so he can bench press 175*3 =

<<175*3=525>>525 pounds How much can Craig bench press? ** Craig can only bench press 20% of Dave's 525 pounds, so Craig can bench press .20*525 = <<20*.01*525=105>>105 pounds How much can Mark bench press? ** Craig bench presses 105 pounds and Mark does 50 pounds less than Craig, so Mark can only press 105-50 = <<105-50=55>>55 pounds #### 55 Jon makes 3/4's the salary that Karen makes. John makes $3000 per month. How long will it take him to make the same amount of money that Karen does in 3 months? How much does Karen make in a month? ** Karen makes $3000 / (3/4) = $<<3000/(3/4)=4000>>4000 per month. How much money does Karen make in 3 months? ** In three months, Karen would make a total of $4000 * 3 = $<<4000*3=12000>>12000. How long will it take John to make the same amount of money that Karen does in 3 months? ** To make the same amount of money John would need to work $12000 / $3000 = <<12000/3000=4>>4 months. #### 4 Frank's laundry detergent is double concentrated and will wash 80 loads of laundry. His detergent is usually $25.00 a bottle but they're having a sale. If he buys 2 bottles, both bottles will drop to $20.00 a bottle. How much does he spend, in cents, per load of laundry, if he buys 2 bottles of detergent? How much do the bottles cost? ** If he buys 2 bottles, the price drops to $20.00 per bottle so they cost 2*20 = $<<2*20=40.00>>40.00 How many loads of laundry can he get? ** He can get 80 loads of laundry per bottle and he bought 2 bottles so that's 80*2 = <<80*2=160>>160 loads of laundry How much does each load of laundry cost? ** The detergent cost $40.00 and he will be able to wash 160 loads of laundry so each load costs 40/160 = $<<40/160=0.25>>0.25 #### 25 Marlon had 30 female baby bunnies in his hutch. They matured after four months, and he gave 2/5 of them to his friend Rodney. If after another three months the bunnies conceived and gave birth to 2 kittens each, calculate the total number of bunnies Marlon has in his hutch now. How many bunnies did Marlon give to Rodney? ** When he gave Rodney 2/5 of the bunnies, he gave away 2/5*30 = <<2/5*30=12>>12 bunnies. How many bunnies did Marlon have left? ** He remained with 30-12 = <<30-12=18>>18 bunnies. How many kittens were born? ** When the bunnies gave birth to two kittens each, the total number of kittens born is 18*2 = <<18*2=36>>36. How many bunnies does Marlon have now? ** In total, Marlon now has 36+18 = <<36+18=54>>54 bunnies #### 54 Flies are Betty's frog's favorite food. Every day the frog eats 2 flies. Betty puts the flies she finds in a bottle. In the morning Betty catches 5 flies inside a bottle, and in the afternoon she catches 6 more, but when she removes the lid, one escapes. Betty wants to gather the whole week's food for her frog. How many more flies does she need? How many flies does the frog eat in a week? ** The frog eats 2 flies/day * 7 days/week = <<2*7=14>>14 flies a week. How many flies does Betty catch in the morning and in the afternoon? ** Betty catches flies in the morning and in the afternoon, for a total of 5 flies + 6 flies = <<5+6=11>>11 flies. How many flies does Betty catch in the morning and in the afternoon? ** But 1 fly escapes, leaving 11 flies - 1 fly = <<11-1=10>>10 flies. How many more flies does Betty need? ** To get her frog's food for the whole week, Betty needs 14 flies - 10 flies = <<14-10=4>>4 more flies. #### 4 John buys a chair. He then buys a table that is 3 times the price of the chair. Then, he buys a couch that is 5 times the price of the table. If John paid $380 for all these items, what is the price of the couch? Define a variable ** Let x be the price of the chair. How much does the table cost? ** The table costs 3*x. How much does the couch cost? ** The couch costs 3*x*5=15*x. Write an equation ** x+3*x+15*x=380 Simplify ** 19*x=380 Simplify ** x=<<20=20>>20 How much does the couch cost? ** The couch costs 20*15=<<20*15=300>>300 dollars. #### 300 Jean has 60 stuffies. She keeps 1/3 of them and then gives away the rest. She gives 1/4 of what she gave away to her sister Janet. How many stuffies did Janet get? How many stuffies did Jean keep? ** Jean kept 60/3=<<60/3=20>>20 stuffies How many stuffies did Jean give away? ** That means she gave away 60-20=<<60-20=40>>40 stuffies How many stuffies did Janet get? ** So Janet got 40/4=<<40/4=10>>10 stuffies #### 10 James wants to learn to become a chess grandmaster. It takes 2 hours to learn the rules. It then takes him 49 times that long to get a level of proficiency to start playing in local tournaments. After that, he devotes his life to chess and spends 100 times as much as the combined time to get proficient to becoming a master. How much total time did he spend? How many hours does it take him to get proficient? ** It takes him 2*49=<<2*49=98>>98 hours to go from knowing how to play to proficient How many hours does he spend in total? ** So he spends 98+2=<<98+2=100>>100 hours combined on those How many hours does it take him to become a master? ** So it takes him 100*100=<<100*100=10000>>10,000 hours to become a master from proficient How much total time did he spend? ** So the total time was 100+10000=<<100+10000=10100>>10,100 hours #### 10,100 Hanna has twice as many erasers as Rachel. Rachel has three less than one-half as many erasers as Tanya has red erasers. If Tanya has 20 erasers, and half of them are red, how many erasers does Hanna have? How many red erasers does Tanya have? ** Half of Tanya's 20 erasers are red, so she has 20/2=<<20/2=10>>10 red erasers. How many red erasers does Tanya have? ** One-half as many erasers as Tanya has red erasers is 10/2=<<10/2=5>>5 red erasers. How many erasers does Rachel have? ** Rachel's three less than one-half as many erasers as Tanya's red erasers, which is 5-3=2 erasers. How many erasers does Hanna have? ** Hanna has twice as many erasers as Rachel, for a total of 2*2=<<2*2=4>>4 erasers. #### 4 Abigail built 10 fences. Each fence took her 30 minutes to build. If she builds fences for the next 8 hours, how many fences would she have built in total? How many minutes are in the next 8 hours? ** 8*60 = <<8*60=480>>480 minutes are in the next 8 hours. How many fences does Abigail build in the next 8 hours? ** Abigail builds 480/30 = <<480/30=16>>16 fences. How many fences will she have built in total? ** Abigail will have built 10+16 = <<10+16=26>>26 fences in total. #### 26