Sigma Prep · sigmaprep.io/worksheets Name Inequality Word ProblemsAnswer keyVersion 2 Date Period Write and solve an inequality for each problem. Stay within a limit: write, solve and roundA gift card has $35 on it. Each coffee costs $3.75. Eli wants to keep at least $6 on the card. How many coffees can Eli buy?35−3.75c≥6; c≤71511, so at most 7 coffees- A drone starts a flight with a full battery, 100 percent. The charge drops 6 percent each minute it flies. For how many whole minutes can it fly and land with at least 25 percent left?100−6m≥25; m≤12.5, so at most 12 minutes
- A shipping box may weigh at most 50 pounds. The empty box weighs 5 pounds, and each book weighs 2 pounds. How many books can be packed in the box?5+2b≤50; b≤22.5, so at most 22 books
- A boat has 11 gallons of fuel and uses 2.5 gallons an hour. The captain wants at least 2 gallons left at the end. How many whole hours can the boat run?11−2.5h≥2; h≤3.6, so at most 3 hours
- A rowboat can hold at most 800 pounds. The two campers in it weigh 300 pounds together, and each bag of gear weighs 19 pounds. How many bags can they bring?300+19b≤800; b≤26196, so at most 26 bags
- A photo kiosk charges $2 to start an order plus $0.65 for each print. Lena can spend at most $20. How many prints can she order?2+0.65p≤20; p≤27139, so at most 27 prints
- A taco stand starts lunch with 260 tacos and sells about 16 tacos an hour. It must keep at least 45 tacos for the dinner rush. For how many whole hours can it sell at that rate?260−16h≥45; h≤13167, so at most 13 hours
- A canoe rental costs $10 plus $15 an hour. Kai cannot spend more than $60. For how many whole hours can Kai rent the canoe?10+15h≤60; h≤331, so at most 3 hours
- A party hall costs $325 to rent plus $24 per guest. The budget is no more than $1150. How many guests can come?325+24g≤1150; g≤3483, so at most 34 guests
- A phone plan costs $30 a month plus $8 for each gigabyte of data. Ava wants her bill to be at most $95. How many whole gigabytes can she use?30+8g≤95; g≤881, so at most 8 gigabytes
Reach a goal: write, solve and roundA reading challenge asks for at least 400 pages. Omar has read 116 pages and reads 26 pages a day. How many more days must he read?116+26d≥400; d≥101312, so at least 11 days- Each cup of lemonade sells for $1 and costs $0.35 to make. The stand cost $20 to set up. How many cups must be sold to make a profit of at least $25?0.65c−20≥25; c≥69133, so at least 70 cups
- Noah has $86 and saves $12 a week. How many weeks will it take him to have at least $310?86+12w≥310; w≥1832, so at least 19 weeks
- A plane at 3500 feet climbs 650 feet a minute. After how many whole minutes will it be at 20000 feet or higher?3500+650m≥20000; m≥25135, so at least 26 minutes
- Theo gets $10 a week for chores and $22 for each lawn he mows. How many lawns must he mow in a week to earn at least $190?10+22l≥190; l≥8112, so at least 9 lawns
- A recycling center pays $0.65 for each pound of cans. How many whole pounds of cans must a class bring in to earn at least $75?0.65p≥75; p≥115135, so at least 116 pounds
- A pool needs at least 11000 gallons of water. It has 3600 gallons, and a pump adds 33 gallons a minute. How many whole minutes must the pump run?3600+33m≥11000; m≥224338, so at least 225 minutes
- A band paid $525 to have shirts printed and sells each shirt for $19. How many shirts must it sell to take in at least the $525 it paid?19s≥525; s≥271912, so at least 28 shirts
- A club makes $2.25 profit on each box of cookies it sells. It has already raised $200. How many more boxes must it sell to raise at least $400 in all?200+2.25b≥400; b≥8898, so at least 89 boxes
- A basketball player has scored 79 points this season and scores about 23 points a game. How many more games until she has at least 300 points?79+23g≥300; g≥92314, so at least 10 games
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