Pins

Sarah bought 9 pins, Eva bought 4 pins and saved 2 euros. How many pins buy Dana, when she have 3 euro?

Result

x =  7

Solution:

Solution in text x =







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!
avatar




To solve this example are needed these knowledge from mathematics:

Next similar examples:

  1. April (month)
    coins_2 April has 30 days. Roman saves his money in the box for the whole month. Every third day you saves 10 cents. How many cents did Roman saved during the whole month when start saving on April 1?
  2. Cheaper cars
    vagon State-owned railway company buys 10 air-conditioned coaches for nearly 18 million euros. Calculate how many euros is the equivalent of one seat in the wagon with a capacity of 83 people. How many of used cars at the price 2700 Euros can be buy instead o
  3. Doctors
    cvach1 In the city operates 171 doctors. The city has 128934 citizens. How many citizens are per one doctor?
  4. Math classification
    prezident In 3A class are 27 students. One-third got a B in math and the rest got A. How many students received a B in math?
  5. 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?
  6. The result
    dice_2 How many times I decrease the number 1144 to get the result 22?
  7. Trains
    locomotive Daily passes the same track section 8 pairs of trains with average 2400 passagers. How many people average travel in one train?
  8. President
    gasparovic President of Slovakia earns a monthly € 7844 per month. How many times earn than Jimmy's monther salary € 612? 15.3.2014 the presidential election, which decides who will almost effortlessly 5 years to receive such space salary for nothing;)
  9. On the trip
    skola_17 On the trip were more than 55 children, but less than 65 children. Groups of 7 could be formed, but groups of 8 no. How many children were on a trip?
  10. Value of teeth
    dental_caries To know value to the healthy teeth we discover only when we take care about tooth caries followed by loss of teeth and think how to replace missing teeth... Calculate the value (cost of money) healthy teeth, if we assume that man has with 32 teeth and rep
  11. 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
  12. Addition of Roman numbers
    roman Added together and write as decimal number: XXXIV + MDCCXII
  13. One frame
    room_1 5 picture frames cost € 12 more than three frames. How much cost one frame?
  14. Chewing gums
    zubna-pasta_1 For 3 chewing gums, you will pay 20 CZK less than 7 chewing gums. How much is 1 chewing gum and how much does a 5pcs package cost?
  15. Soda
    soda_water A pack of 12 sodas cost 5.04. What is the unit rate in dollars per soda?
  16. Wire cut
    Cut-Wire A wire of length 7 m was cut into equal lengths using 4 cuts. How long is each piece?
  17. Four families
    Rodina-01 Four families were on a joint trip. In the first family, there were three siblings, namely Alica, Betka and Cyril. In the second family were four siblings, namely David, Erik, Filip and Gabika. In the third family, there were two siblings, namely Hugo and