Rodney, Roger and Ron can lift a combined weight of 239 pounds. Rodney can lift twice as much as Roger, and Roger can lift 7 pounds less than 4 times the amount that Ron can lift. How much can Rodney lift?

Let x represent the amount that Ron can lift.

Roger: 4x-7

Rodney:2(4x-7)=8x-14

Total:x+4x-7+8x-14=239

13x-21=239

13x=260

x=

<<20=20>>20 Rodney:8(20)-14=146 pounds #### 146 Jack says he has 13 more notebooks in his bag than Gerald. Jack gives 5 notebooks to Paula and 6 notebooks to Mike. If Gerald has 8 notebooks, how many notebooks does Jack have left? Jack had 13 more than 8 notebooks for a total of 13+8 = <<13+8=21>>21 notebooks He gave 5 notebooks to Paula so he has 21-5 = <<21-5=16>>16 notebooks left He gave another 6 to Mike so he has 16-6 = <<16-6=10>>10 notebooks left #### 10 A movie theater company is advertising a deal of a movie ticket, a bucket of popcorn, a drink, and a box of candy for $20. Normally, a movie ticket costs $8, a bucket of popcorn costs three dollars less, a drink costs a dollar more than popcorn, and a candy costs half as much as a drink. How many dollars does the deal save a customer who buys a ticket, popcorn, drink, and candy normally? The popcorn costs 8 - 3 = $<<8-3=5>>5. The drink costs 5 + 1 = $<<5+1=6>>6. The candy costs 6 / 2 = $<<6/2=3>>3. The normal price is 8 + 5 + 6 + 3 = $<<8+5+6+3=22>>22. Thus, the deal saves a customer 22 - 20 = $<<22-20=2>>2. #### 2 Diane is twice as old as her brother, Will. If Will was 4 years old 3 years ago, what will the sum of their ages be in 5 years? Since Will was 4 years old 3 years ago, then he is 4+3 = <<4+3=7>>7 years old now Dina is twice as old as he is so she is 2*7 = <<2*7=14>>14 years old now In 5 years, Will will be 7+5 = <<7+5=12>>12 years old In 5 years, Diane will be 14+5 = 19 years old The sum of their ages at that time will be 12+19 = <<12+19=31>>31 years #### 31 During a school meeting, 300 students and 30 teachers are seated but 25 students are standing. How many attended the school meeting? There are 300 students + 30 teachers = <<300+30=330>>330 people that are seated. Since there 25 students that are standing, so 330 + 25 = 355 people who attended the school meeting. #### 355 James hires a seamstress to fix all his shirts and pants. He has 10 shirts and 12 pairs of pants. It takes 1.5 hours to fix a shirt and twice as long for pants. The tailor charges $30 per hour. How much does it cost? It takes 10*1.5=<<10*1.5=15>>15 hours to fix his shirts It takes 1.5*2=<<1.5*2=3>>3 hours per pair of pants So it takes 3*12=<<3*12=36>>36 hours for the pants That means in total it takes 15+36=<<15+36=51>>51 hours So it cost 51*30=$<<51*30=1530>>1530 to fix everything #### 1530 Isabelle works in a hotel and runs a bubble bath for each customer who enters the hotel. There are 13 rooms for couples and 14 single rooms. For each bath that is run, Isabelle needs 10ml of bubble bath. If every room is filled to maximum capacity, how much bubble bath, in millilitres, does Isabelle need? In the rooms for couples, there are 13 rooms * 2 people per room = <<13*2=26>>26 people. So in total, there are 26 people in couples' rooms + 14 people in single rooms = <<26+14=40>>40 people in the hotel. As each person gets a bubble bath, Isabelle will need a total of 40 baths * 10ml of bubble bath per bath = <<40*10=400>>400ml of bubble bath. #### 400 Peter and Andrew like to run in the morning. Peter runs 3 miles more than Andrew's 2 miles. After 5 days, how many miles have they both run? Peter runs 3 miles more than Andrew's 2 miles, so he runs 3+2 = <<3+2=5>>5 miles Peter runs 5 miles a day and Andrew runs 2 miles so they run 5+2 = <<5+2=7>>7 miles a day If they run 7 miles a day then over a course of 5 days they run 7*5 = <<7*5=35>>35 miles #### 35 The price of electricity went up by 25%. John's old computer used 800 watts and his new computer uses 50% more. If the old price of electricity was 12 cents per kilowatt-hour, how much does his computer cost, in dollars, to run for 50 hours? His new computer uses 800*.5=<<800*.5=400>>400 watts more than his old computer So it users 800+400=<<800+400=1200>>1200 watts That is 1200/1000=<<1200/1000=1.2>>1.2 kw Electricity cost 12*.25=<<12*.25=3>>3 cents more than it used to So it now cost 12+3=<<12+3=15>>15 cents per kwh He used 1.2*50=<<1.2*50=60>>60 kwh So he paid 15*60=<<900=900>>900 cents per kwh So he paid 900/100=$<<900/100=9>>9 #### 9 Peter needs 80 ounces of soda for his party. He sees that 8 oz cans cost $.5 each. How much does he spend on soda if he buys the exact number of cans he needs? He needs 10 cans because 80 / 8 = <<80/8=10>>10 He spends $5 because 10 x .5 = 10 #### 5