# Algebra - math word problems

1. Classroom In a classroom are 30 students, boys are four times more than girls. How many boys are in the class?
2. Isosceles trapezoid Calculate the content of an isosceles trapezoid whose bases are at ratio 5:3, the arm is 6cm long and it is 4cm high.
3. Logistics Head of logistics department informed the meeting of management of the same item is currently not available in sufficient quantity in all three warehouses of the company. We have the total 135 pieces. It was 37 pieces more in the warehouse No. 3 than in th
4. The deposit Deposit has been placed for one year at an annual rate of 4.5%. After the added interst amount rose to € 2,612.5. Determine initial deposit.
5. Painters Five painters painting the fence for eight days. How many days over will take work if paint the fence only four decorators?
6. Gardens colony Gardens colony with dimensions of 180 m and 300 m are to be completely divided into the same large squares of the highest area. Calculate how many such squares can be obtained and determine the length of the square side.
7. Gp - 80 Sum of the first four members of a geometric progression is 80. Determine they if we know that the fourth member is nine times greater than the second.
8. Discriminant Determine the discriminant of the equation: ?
9. Solutions How much 60% solution and how much 35% solution is needed to create 100 l of 40% solution?
10. On the farm On the farm were housed 70 heads of cattle with food supply for 180 days. After 60 days, 10 head of cattle sold, and for the next 30 days they sold 10 more. How many days is sufficient supply of feed for the remaining cattle?
11. Classroom In a class are 32 pupils. Boys are 8 less than girls. How many boys and girls are in the classroom?
12. Millionaire Mr. Smith have gone withdraw from bank saving interest € 1,500. How big was his initial deposit if the annual interest rate is 1.5%? Daddy is a 46 year old and son is at age of 16. When (which year) was/will daddy 5 times more years than his son?
14. Calcium and citality The daily dose of calcium obtained using 0.75 liters of milk and 60 grams of cheese. A/ At the morning I drank half a liter of milk. How much cheese I must eatto eat a daily dose of calcium? b / I ate 50 grams of cheese, how much milk I must drink? c /.
15. The book If one day you read p pages, you will read the book 24 days. If you read each day 10 pages more, you would read a book in 16 days. How many pages have the book?
16. Supplementary angles One of the supplementary angles are three times larger than the other. What size is larger of supplementary angles?
17. Trapezoid How long are the trapezoid bases with area 24 cm2 and height 3 cm. One base is 3 times longer than the shorter.
18. Circle and rectangle A rectangle with sides of 11.7 cm and 175 mm is described by circle. What is its length? Calculate the content area of the circle described by this circle.
19. Salt Sea water containing 5% salt. How many kg of fresh water necessary to pour into 40 kg of sea water so that the salinity fell to 2%?
20. Uranium ore Uranium ore contains 0.2% of pure uranium and pure uranium contains 0.07% of fissile uranium. How many grams of fissile uranium contains 2800 ton of uranium ore?

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