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After check of textbooks found that every 8-th textbook should be withdrawn. Together 74 textbooks were withdrawn.

How many textbooks were in stock before withdrawn and how many after withdrawn?

Result

before:  592
after:  518

Solution:










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. Chocolate
    cokolada Frank bought 6 same chocolates for 12 Eur. How many euros he pay for 19 chocolates?
  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. Weeks
    calendar 55 weeks is equal to how many days?
  5. Flags
    vlajka_cz How many different flags can be made from colors red, white, blue, black, yellow, green, purple, gray, orange so that each flag consisted of three different colors?
  6. Seating
    kupe_1 How many ways can 7 people sit on 3 numbered chairs (eg seat reservation on the train)?
  7. Orchard
    orchard 5 trees in 3 lines grows in the orchard. How many trees are in the orchard?
  8. Cyclist
    cyclist_2 A cyclist passes 88 km in 4 hours. How many kilometers he pass in 8 hours?
  9. Holidays
    holidays Calculate how many hours take holidays, if take 1 weeks.
  10. 7 heroes
    7statocnych 5 heroes galloping on 5 horses behind. How many ways can sort them behind?
  11. Vans
    shuttlevan In how many ways can 7 shuttle vans line up at the airport?
  12. Chickens
    chickens 4 chickens give 4 eggs in 4 days. How many eggs can give 8 chickens for 8 days?
  13. Compare
    fraction Compare fractions ?. Which fraction of the lower?
  14. Above 100%
    dummy What is 155% of 210?
  15. Evaluate expression
    mixed_fractions.JPG Evaluate expression using BODMAS rule: 1 1/4+1 1/5÷3/5-5/8