Ratio + rational numbers - math problems

Number of problems found: 40

  • Write 4
    Write each ratio as a fraction of whole numbers: a 4.8 to 11.2 6) 2.7 to 0.54
  • Boys and girls
    If the ratio of male & female teachers is 2/5 & it is in proportion of the male & female students, how many are girls if there are 42 boys?
  • A loan
    A loan in the amount of $944 is charged simple interest at an annual rate of 8.1%. How much money is owed 14 months after the loan was made?
  • Sum and ratio
    The sum and ratio of two numbers is equal to 10. Which numbers are they?
  • Marble bag
    A marble bag sold by Rachel's Marble Company contains 5 orange marbles for every 6 green marbles. If a bag has 35 orange marbles, how many green marbles does it contain?
  • Ratio - proportion
    Reduce the number 16 in proportion 3:2 5:4 11:8
  • Three co-owners
    The three co-owners of building company have earnings from a contract portioned in the ratio of 3:6:7. Each of them received the amount in whole USD. One of them on contract earned 86450 USD. What was the total earnings this order?
  • Bureaucracy
    23 people attended the office. 9 of them completed the questionnaire. What is the percentage of all people?
  • Efficiency
    A certain device consumes 28 kW and delivers 14 kW. Find its efficiency.
  • VAT
    John paid 1000 Euros in store for purchase. Calculate value added tax (VAT), which paid in purchase, if the VAT rate is 20%.
  • School trip
    School trip cost 247.2 Eur for one class (24 students). How much would a trip cost for two classes? (both classes together have 53 students)
  • Store
    One meter of the textile was discounted by 2 USD. Now 9 m of textile cost as before 8 m. Calculate the old and new price of 1 m of the textile.
  • Excavation
    Mr. Billy calculated that excavation for a water connection digs for 12 days. His friend would take 10 days. Billy worked 3 days alone. Then his friend came to help and started on the other end. On what day since the beginning of the excavation they met?
  • Bonus
    The gross wage was 1323 USD including 25% bonus. How many USD were bonuses?
  • Tare
    Gross weight of shipment is 6927 kg and its tare is 7%. Calculate the net weight of the shipment.
  • Scale
    The swimming pool is long 110 m and 30 m wide. The plan of the city is shown as a rectangle with an area 8.25 cm2. What scale is the city plan?
  • Coffee
    In-stock are three kinds of branded coffee prices: I. Kind. .. .. .205 Kc/kg II. Kind. .. .. .274 Kc/kg III. Kind. .. .. 168 Kc/kg Mixing these three species in the ratio 8:5:6 create a mixture. What will be the price of 100 grams of this mixture?
  • Tape
    Video is 153% more expensive than tape recorder. How many percent is tape recorder less expensive than video?
  • Troops
    The route is long 147 km and the first-day first regiment went at an average speed of 12 km/h and journey back 21 km/h. The second day went second regiment the same route at an average speed of 22 km/h there and back. Which regiment will take route longer
  • Car factory
    The carmaker now produces 2 cars a day more than last year, so the production of 70312 cars will save just one full working day. How many working days needed to manufacture 70312 cars last year?

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