Unknown number 24

I think the number:

a - is the same as the square area that has the 12th circumfence. What is this number?
b - its half is 7 times bigger than its quarter. Is this the number?


a =  9
b =  28


Solution in text a =

b/2 = 7 + b/4

b = 28

b = 28

Calculated by our simple equation calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!

Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar examples:

  1. Class alphabet
    kniha_tridni All 29 pupils in the class are written in a class by alphabet. The number of pupils enrolled before Paul is three times higher than the number of pupils behind him. Calculate how many pupils are enrolled after Paul.
  2. Addition of Roman numbers
    roman Added together and write as decimal number: LXXXV + CDXXI
  3. Trains
    locomotive Daily passes the same track section 8 pairs of trains with average 2400 passagers. How many people average travel in one train?
  4. Perimeter from area
    stvorec_6 What is the perimeter of the square if its content is 64 cm2?
  5. Area of square
    big-square Calculate the content area of the square whose perimeter is 24 dm.
  6. Fence
    zahrada-rd Square garden has an area of 537 m2. How many meters netting is necessary to fence the garden?
  7. Garden plot
    plot Calculate how many meters of fence need to fence the square garden with length and width of 13 meters.
  8. Forest nursery
    stromcek_2 In the forest nursery after winter, they found that 1/10 stems died out of them. For them, they land 193 new spruces. How many spruces are in the forest nursery?
  9. Cages
    guineapig Honza had three cages (black, silver, gold) and three animals (guinea pig, rat and puppy). There was one animal in each cage. The golden cage stood to the left of the black cage. The silver cage stood on the right of the guinea pig cage. The rat was in the
  10. Breads
    chlieb_2 Several pieces of bread were in the store. Half of them plus a half of bread bought a cookbook. Of the remaining bread, half of it plus half of the bread was bought by Mr. Novák. The last bread was bought by Ms. Small. How many breads were in the store at.
  11. Daddy
    otec_syn 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?
  12. Apples 3
    apple Julka has 5 apples more than Hugo and four apples less than Annie. Hugo has 17 apples. How many apples has Julka and how Annie?
  13. Bricks II
    cihly 3/4 bricks weighs 6 kg and 2/3 bricks. How weighs one whole brick?
  14. Popsicles
    nanuky Francis went to buy ice lollies. If he buy 8 popsicles he missed 4 USD. When he buy 7 popsicles, got back 1 USD. How many USD was a popsicle?
  15. If-then equation
    triangles_10 If 5x - 17 = -x + 7, then x =
  16. Eq1
    eq1_3 Solve equation: 4(a-3)=3(2a-5)
  17. Foot in bus
    havo It was 102 people on the bus. 28 girls had two dogs. A 11 girls had one dog. At the next stop seceded 5 dogs (even with their owners). They got two boys together with three dogs. The bus drove one driver. How many foot were in bus?