Percentages + multiplication - math problems

Number of problems found: 74

  • The sales 2
    The sales tax in your city is 8.8 percent, and an item costs 55 USD before tax. How much tax would you pay on that item?
  • Paulownia
    Seed germination is 80%. Of the sprouted plants, 8% subsequently die. How many plants does a gardener grow from 1,500 seeds?
  • An aircraft
    An aircraft manufacturing company has submitted bids on two separate airline contracts, A and B. The company feels that it has a 70% chance of winning contract A and a 25% chance of winning contract B. Furthermore, it believes that winning contract A is i
  • The ratio 4
    The ratio of two number is 5:4 if 40% of the first number is 12, what will be 50% of the second number?
  • Markup
    A store pays $370 for a bicycle.  The percent of markup is 19%.  What is the selling price of the bike?
  • Shen's
    Shen's chocolate bar is 54% cocoa. If the weight of the chocolate bar is 54 grams, how many grams of cocoa does it contain? Round your answer to the nearest tenth.
  • The Norris
    The Norris family goes out for lunch, and the price of the meal is 52. The sales tax on the meal is 6% and the family also leaves a 20% tip on the pre-tax amount. What is the total cost of the meal?
  • Created trio
    What is the probability that in the created trio, which consists of 19 boys and 12 girls, they will be: a) the boys themselves b) the girls themselves c) 2 boys and 1 girl?
  • Fish population
    The number of fish in a lake decreased by 10% during period of one year. Last year there were 500 fish in the lake. What is the fish population this year?
  • Online purchase
    A ticket for a school performance costs 95 euros. If the ticket is purchased online, there is a discount of 4%. What is the total price of a ticket purchased online?
  • In the 14
    In the survey, the barangay had a certain number of families, and 60% of them are identified and belong to the marginalized sector's poor if the total families are 150. How many families belong to the poor sector?
  • Multiplier
    What is the decimal multiplier to increase by 6.1%?
  • Three colors
    Find the probability that 3 balls of the same color will be drawn from fate with 10 white, 10 red, and 10 blue balls.
  • Skis
    Skis, which cost € 800, became 25% more expensive before the season. After the season, they became cheaper again by 25%. How many euros did the skis cost after the discount?
  • Hazard game
    In the Sportka hazard game, 6 numbers out of 49 are drawn. What is the probability that we will win: a) second prize (we guess 5 numbers correctly) b) the third prize (we guess 4 numbers correctly)?
  • Hiking trip
    Rosie went on a hiking trip. The first day she walked 18kilometers. Each day since she walked 90 percent of what she walked the day before. What is the total distance Rosie has traveled by the end of the 10th day? Round your final answer to the nearest ki
  • A number
    A number 5% greater than 75?
  • Birthday paradox
    How large must the group of people be so that the probability that two people have a birthday on the same day of the year is greater than 90%?
  • The manufacturer
    The manufacturer found that 3% of the plates produced had a malfunction. Of the compliant, 75% are first and 25% second. What is the probability of producing first and second class plates?
  • The test
    The test contains four questions, and there are five different answers to each of them, of which only one is correct, the others are incorrect. What is the probability that a student who does not know the answer to any question will guess the right answer

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