Equation + multiplication - examples


  1. Chocolate
  2. Brick
    brick One brick is 2 kg and half a brick heavy. What is the weight of one brick?
  3. Root
    root_quadrat The root of the equation ? is: ?
  4. Textbooks
    textbooks After check of textbooks found that every 8-th textbook should be withdrawn. Together 74 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
  5. Logic
    blue-barrel A man drinks a barrel of water for 31 days, woman for 58 days, for how many days they drink barrel together?
  6. Camp
    skauti In the camp are children. 1/4 went on a trip, 1/2 went to bathe and 99 children remained in the room. How many children are in camp?
  7. Theater
    SND The theater has in each row with 11 seats. Ticket to the first 8 rows is for 198 KČ. In next rows is for 84 KČ. The theater was completely sold out. Revenue was 34980 KČ. How many rows are in the theater?
  8. Discount
    pulover Ladies sweater was twice discounted. First by 17%, then by 17% of the new price. Its final price was 72 USD. Determine the original price of sweater.
  9. Bonus
  10. Diophantus
    diofantos_1 We know little about this Greek mathematician from Alexandria, except that he lived around 3rd century A.D. Thanks to an admirer of his, who described his life by means of an algebraic riddle, we know at least something about his life. Diophantus's youth l
  11. Chestnuts
    gastany Antonio has 4-times chestnuts less than Floyd. Together they have 290 chestnuts. How many chestnuts has Antonio and Floyd?
  12. Number
    fractions_1 Calculate the integer number which, divided by 45 gives 20 and the rest 2.
  13. Forestry workers
  14. Store
    pave One meter of the textile were discounted by 2.4 USD. Now 6 m of textile cost as before 3 m. Calculate the old and new price of 1 m of the textile.
  15. Server
  16. Bus vs. train
  17. Motion problem
  18. Unknown x
    UnknownX If we add to unknown number 72, then divide by 2 and then subtract 29, we get back an unknown number. What is this unknown number?
  19. Homework
    old_phone_1 The monthly fee for the phone is 12 USD and for phone unit 0.07 USD. How much family pay phone in the first quarter Q1, if on January 1 had on the counter 97721 units and on April 1 98115 units.
  20. Observer
    ohrada The observer sees straight fence 100 m long in 30° view angle. From one end of the fence is 119 m. How far is it from the another end of the fence?

