Math word problems

From our database of math word problems and examples we offer:

• Ray
  Light ray loses 1/19 of brightness passing through glass plate. What is the brightness of the ray after passing through 7 identical plates?
• Working time - shortening
  The media often speculates about the change (especially to shorten) the working time of the five-day eight-hour working week to another working model. Calculate how many hours a day the employee would have to work a day at 3-day work week if he must work
• Cube walls
  Find the volume and the surface area of the cube if the area of one of its walls is 40 cm².
• Axial cut
  The cone surface is 388.84 cm², the axial cut is an equilateral triangle. Find the cone volume.
• The cube
  The cube has a surface area of 216 dm². Calculate: a) the content of one wall, b) edge length, c) cube volume.
• Hostel
  Students are accommodated in 22 rooms. Rooms were 4 and 6 bed. How many rooms in which type occupied 106 children there?
• Storm 3
  If the temperature yesterday was 56 and today is 13 degrees cooler, what is today's temperature?
• Two pumps
  Pump A takes twice as long to fill a tank than B . Together they take 2 hours to fill the tank. How long does each one take to fill the tank by itself?
• Parallelogram
  Calculate area of the parallelogram ABCD as shown if |AB| = 19 cm, |BC| = 18 cm and angle BAD = 90°
• Tadeus
  Tadeus and Jolana have a total of CZK 15. Jolana has half that of Tadeus. Nevertheless, Jolana has 3 coins and Tadeus 2. Which coin does Tadeus have and which Jolan?
• Contract
  8 employees complete the contract for 65 hours. After 17 hours, 3 employees had to leave for another job. How many more hours will the job on contract be fulfilled?
• Mother and son
  Mother is four times older than her son. In 16 years, the son will be two times younger than his mother. How many years are mother and son?
• Four workers
  Four workers will lay the floor of the gym in six hours. After an hour of working together, one of the workers left to the doctor. How long before the remaining three workers finish their work?
• Cube, cuboid, and sphere
  Volumes of a cube and a cuboid are in ratio 3: 2. Volumes of sphere and cuboid are in ratio 1: 3. In what ratio are the volumes of cube, cuboid, and sphere?
• Adam
  Adam has half the money in his right pocket than in his left pocket. If he transferred 40 crowns from the left pocket to the right, he would have the same in both pockets. Calculate how many crowns does Adam have in his left pocket more than in his right?
• The edge of a cube
  How much does the edge of a cube of 54.9 cm³ measure?
• Two numbers
  The sum of two numbers is 1. Identify this two numbers if you know that the half of first is equal to the third of second number.