Percentages + reason - math problems

Number of problems found: 86

  • Driving school
    Driving final exam involving 10 attendants. The exam consists of three parts. 2 fails at test (quiz) and 6 students fails on car skills test on playground (slalom between the cone). The practical part of the test - driving in town in the real traffic - al
  • Unions
    Calculate how much money per year would go to the treasury of unions if 976 thousand employees join unions with an average net salary of 587 euros and if union membership costs 1% of the net monthly salary.
  • Price of state
    Estimate the cost of the state based on following reason. State price is expressed as a percentage respectively share in the redistribution of national GDP. Employee creates monthly value € 868 (super-gross wage).Then tax him 35.2% employer contributions
  • Paddlers
    Students of canoeists trip traveled in three days 102 km. The second day traveled 15% more than the first day and at the third day 9 km over the second day. How many kilometers are traveled each day?
  • Sea water
    Seawater contains about 4.3% salt. How many dm3 of distilled water we must pour into 5 dm3 of sea water to get water with 1.8% salt?
  • VAT
    John paid 1000 Euros in store for purchase. Calculate value added tax (VAT), which paid in purchase, if the VAT rate is 20%.
  • Gutter
    How much metal is needed for production 60 pieces of gutter pipes with the diameter 17 cm and length of 6 m? The plate bends add 6% of the material.
  • Bonus
    The gross wage was 1323 USD including 25% bonus. How many USD were bonuses?
  • TV fail
    The TV has after 10,000 hours average 35 failures. Determine the probability of TV failure after 400 hours of operation.
  • Blood
    In the human body, the blood is about 7.3% body weight. How many kilograms of blood are in the human body with weight 109 kg?
  • Inflation
    What is better for people (employees)? ...
  • Energy saving
    They were released three different, independent inventions saving 20%, 24% and 15% energy. Some considered that while the use of these inventions, the total savings will be 20% + 24% + 15% = 59%. Is this true? How much will percent of energy save all thre
  • Shooter
    The probability that a good shooter hits the center of the target circle I is 0.1. The probability that the target hit the inner circle II is 0.58. What is the probability that it hits the target circle I or II?
  • Wood in the forest
    The amount of wood in the forest was estimated at 6000 m3. How much wood will be in forest after 2 years if the annual growth of wood is 2.5% each year and logging 30 m3 each year?
  • Loans, loan ...
    In Slovakia, launched a short-term non-bank loans, of which few people have their "take" are considered unfavorable. Often, the borrower ends up in a spiral of debt, which takes more and more onerous loan used to repay earlier loans. Calculate how many 9-
  • Extreme temperatures
    USA hit extreme heat wave. Calculate percentage of the air temperature change from normal summer temperature 23 °C to 40 °C.
  • Tesco Clubcard
    Bernard got on quarterly billing vouchers for Tesco ClubCard taking goods worth 2.3 Eur. Calculate how much per month in Tesco stores bought goods on average. Tesco ClubCard works for every Euro spent you get one ClubCard point that will be converted to 1
  • Discounts on rail (ZSSK)
    The railway company ZSSK offers a discount of 15% (REGIONAL) for 5 Eur/year. Calculate the real discount rate as a percentage, where passengers will travel 19 Eur per week.
  • Solidarity
    Imagine a word solidarity means that salt donation to the needy, who have neither the salt. If we take word solidarity has word base salt + gift (only in Slovakian language). Calculate how many kilos of salt sympathetic citizen "gives" government a year i
  • Slovak broad track
    Once upon a time, we learned in school that the Russians have "wider" tracks than our, because they have less tolerable ground. In truth, decide olny area of sleepers, no track gauge. Calculate how many millimeters, our track 1435 mm different from the Ru

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