Latest word problems

Number of problems found: 809

  • Angles of a hexagon
    hexagon-irregular Find the interior angles of a hexagon if the sizes of the angles form an arithmetic sequence and the smallest angle is 70°.
  • Is right triangle
    rt_triangle_1 Find out if the triangle ABC (with right angle at the vertex C) is right if: a) a = 3dm, b = 40cm, c = 0.5m b) a = 8dm, b = 1.2m, c = 6dm
  • Group of children
    family_1 There is a group of children. There is a boy named Adam in each of the three children subgroup and a girl named Beata in each quartet (four-member subgroup). How many children can be in such a group and what are their names in that case?
  • Divisible by four
    numbers2_1 Are 240 are divisible by 4?
  • Cube containers
    cubes3_2 Replace the two cube-shaped containers with 0.8 dm and 0.6 dm edges with a single cube-shaped one so that it has the same volume as the two original ones together. What is the length of the edge of this cube?
  • Rhombus and diagonals
    rhombus-diagonals The lengths of the diamond diagonals are e = 48cm, f = 20cm. Calculate the length of its sides.
  • A bus
    bus27_1 A bus is scheduled to travel a distance 121 km in 2 3/4 hours. What average rate of speed must be maintained to arrive on schedule?
  • Line segment
    lines_parallel_crossing Line segment AB is 8 cm long. Divide it in a ratio of 2: 3.
  • Present value
    exp_growth A bank loans a family $90,000 at 4.5% annual interest rate to purchase a house. The family agrees to pay the loan off by making monthly payments over a 15 year period. How much should the monthly payment be in order to pay off the debt in 15 years?
  • The temperature 10
    chladici The temperature in a freezer is -15°C and it increases by 3°C.
  • Savings
    penize_5 Suppose on your 21st birthday you begin making monthly payments of $500 into an account that pays 8% compounded monthly. If you continue the payments untill your 51st birthday (30 years), How much money will be in your account? How much of it is interest?
  • Future value
    penize_2 Suppose you invested $1000 per quarter over a 15 years period. If money earns an anual rate of 6.5% compounded quarterly, how much would be available at the end of the time period? How much is the interest earn?
  • Eight chairs
    family_1 There are eight chairs by the table and one more child sitting on each one. There are two times more girls than boys. How many girls and how many boys can there be?
  • Copper winding
    ohms-law Calculate the current flowing through the copper winding at an operating temperature of 70°C. Celsius, if the winding diameter is 1.128 mm and the winding length is 40 m. The winding is connected to 8V.
  • Increase the mean
    mean_normal To which number should the number 4 be changed between the numbers 4,5,7, 1,0,9,7,8, -3,5 in order to increase the arithmetic mean of these numbers by 1.25?
  • Current in the conductor
    ohms-law Calculate the current in the conductor (in mA) if it is connected to a 4.5 V voltage source and its resistance is 20 (ohm).
  • Quarter of an hour
    clocks2_1 If the clock showed a quarter of an hour more, it would be 10 minutes to 10 hours. How many hours do they show?
  • The bulb
    bulbs What is the resistance of a filament lamp when it is connected to a 9V battery and has a current of 120 mA?
  • The raw
    statistics The raw data presented here are the scores (out of 100 marks) of a market survey regarding the acceptability of new product launched by a company for random sample of 50 respondents: 40 45 41 45 45 30 30 8 48 25 26 9 23 24 26 29 8 40 41 42 39 35 18 25 35
  • The sides 3
    equilateral_triangle The sides of an equilateral triangle are 9.4 cm, correct to the nearest one decimal place. Work out the upper bound of the side of this triangle

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