Basic functions - math problems

Number of problems found: 2552

  • Salt solution
    Salt-Sodium-Chloride-NaCl Calculate the weight of a 50% salt solution that we prepare from 120 g of salt.
  • The vaccination
    covid19 The vaccination coverage of the population is 80%. Unvaccinated make up 60% of all infected. What percentage are unvaccinated more likely to be infected?
  • When 5
    fractions When 5 is subtracted from both my numerator and denominator I become 3/4. What fraction i am?
  • Taxes
    penize If you were charged $243 in taxes on a $4,050 purchase, what percent tax were you charged?
  • Sale goods
    sale Sale goods were reduced twice. First by 15% and then by another 20% of the new price. What percentage of the original price was the final price?
  • Multiplicative inverse
    inverse Explain why the reciprocal of - 1 1/17 is the multiplicative inverse of - 17/18.
  • Insurance 2
    house A house that is valued at 255,000 euros has been insured for 224,000 euro. At what percent has it been insured?
  • A frequency
    frequency-and-wavelength A frequency table of grades has five classes (A, B, C, D, F) with frequencies of and 2,14,13,8 and 1 respectively. Using percentages, what are the relative frequencies of the five classes?
  • Regular price
    tele The sale price of a television set is 7200. The discount rate is 40%. Find its regular price.
  • The average 4
    car The average cost price of a car in Ireland is now €26,430 excluding VAT. If VAT is 23% calculate the actual selling price of a car in 2021.
  • Railways 3
    sequence_geo Railway Corporation wants to purchase a new machine for $360,000. Management predicts that the machine can produce sales of $220,000 each year for the next 5 years. Expenses are expected to include direct materials, direct labor, and factory overhead (exc
  • Conjugate equation
    conj Find the numbers of a and b, if (a - bi) (3 + 5i) is the Conjugate of (-6 - 24i)
  • A perimeter
    paralleogram_axes A perimeter of a parallelogram is 2.8 meters. The length of one of its sides is equal to one-seventh of the entire perimeter. Find lengths of the sides of the parallelogram.
  • An aircraft
    venn_intersect 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
    ratios2 The ratio of two number is 5:4 if 40% of the first number is 12, what will be 50% of the second number?
  • Sort fractions
    fractions Which is larger 3/7, 3/8, 3/9, 3/6 =
  • Clothes 4
    textiles If the cost of 16.5 metres of cloth is ₹2,062.50 then find the cost of 24.75 metres of clothes
  • Cost structure
    factory_butter You are currently trying to decide between two cost structures for your business: one that has a greater proportion of short-term fixed costs and another that is more heavily weighted to variable costs. Estimated revenue and cost data for each alternative
  • 76% is
    percent 76% is between which of the following two numbers. 1) 1/5 & 1/4. 2) 1/3 & 1/2 3) 2/3 & 7/10 4) 3/4 & 5/6
  • Nails
    klince If a keg of nails costs $129.45 and 6/7 of the keg is used, what is the value of the remaining nails?

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