Family

The parents had 7 daughters. Each of them had one brother. How many members family had?

Result

n =  10

Solution:

Solution in text n =







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

Showing 3 comments:
#1
Trugamer
The reason I got this wrong is because it says "each of them had one brother", what's wrong with this is that I said six,it said it was five.

#2
Math student
I think there 6 girls have 1 brother and 2 parents.

#3
Math student
Each girl has one brother meaning that all 7 sisters share on brother.
Family includes father and the mother too so
7+1+2=10

avatar









To solve this example are needed these knowledge from mathematics:

Next similar examples:

  1. Theater
    SND The theater has in each row with 19 seats. Ticket to the first 10 rows is for 30 USD. In next rows is for 15 USD. The theater was completely sold out. Revenue was 12255 USD. How many rows are in the theater?
  2. Voting
    vote_2 400 employees cast their votes in a board member election that has only 2 candidates. 120 people vote for candidate A, while half of the remaining voters abstain. How many votes does candidate B receive?
  3. Homeless Dezider
    kos Homeless Dežko has 9 coins in jacket: Calculate the value of its assets and calculate how many bottles of wine for 0.55 EUR can he buy.
  4. Piggy
    pig A man bought a pig for € 60 then sold it for € 75. Then again bought for € 90 and sold it for € 100. How many € earned?
  5. Which
    plusminus_11 Which decimals when subtracted equal 3.89: a - b = 3.89
  6. Laboratory
    teplomer_24 Mang Elio went to his laboratory at 7:00am And recorded that the temperature was 11.07°C. At lunchtime, the temperature rose by 27.9°C but dropped by 8.05°C at 5:00 PM. What was the temperature at 5:00 PM?
  7. Addition of mixed numerals
    scientific_3 Add two mixed fractions: 2 4/6 + 1 3/6
  8. Infinite sum of areas
    height-of-equilateral-triangle Above the height of the equilateral triangle ABC is constructed an equilateral triangle A1, B1, C1, of the height of the equilateral triangle built A2, B2, C2, and so on. The procedure is repeated continuously. What is the total sum of the areas of all tri
  9. Noontime
    teplomer_21 In the morning temperature was 110°F. By noontime it has gone up by 15°F. What was the noon temperature. (Give your answer in °F)
  10. Adding mixed numbers
    fractions_17 Add this two mixed numbers: 1 5/6 + 2 2/11=
  11. Root
    root_quadrat The root of the equation ? is: ?
  12. 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
  13. Coffee
    coffe In stock are three kinds of branded coffee prices: I. kind......248 Kč/kg II. kind......134 Kč/kg III. kind.....270 Kč/kg Mixing these three species in the ratio 10:7:7 create a mixture. What will be the price of 1100 grams of this mixture?
  14. Store
    pave One meter of the textile were discounted by 2 USD. Now 9 m of textile cost as before 8 m. Calculate the old and new price of 1 m of the textile.
  15. Short cut
    direct_route Imagine that you are going to the friend. That path has a length 270 meters. Then turn left and go another 1810 meters and you are at a friend's. The question is how much the journey will be shorter if you go direct across the field?
  16. Time
    time Write time in minutes rounded to one decimal place: 5 h 28 m 26 s.
  17. Water
    tanks Mix 21 l of water with temperature of 38 °C, 67 l warm of 34 °C and 14 l water of 32 °C. What is the temperature of the mixed water immediately after mixing?