Math word problems

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

• Louvers
  The company charges for office equipment louvers total 262 Eur. From the delivery bill is obvious that the louvers are 76 Eur expensive than their installation. What percentage of the total charged is the installation of louvers?
• The square
  The square oak board (with density ρ = 700 kg/m³) has a side length of 50 cm and a thickness of 30 mm. 4 holes with a diameter of 40 mm are drilled into the board. What is the weight of the board?
• Compute 4
  Compute the exact value of the triangle area with sides 14 mi, 12 mi, and 12 mi long.
• First class
  The shipment contains 40 items. 36 are first grade, 4 are defective. How many ways can select 5 items, so that it is no more than one defective?
• Cost structure
  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
• Combinations
  If the number of elements increase by 3, it increases the number of combinations of the second class of these elements 5 times. How many are the elements?
• Desribed circle to rectangle
  Rectangle with sides 6 cm and 4 cm was circumscribed circle. What part of the content of the circle determined by the circumscribed circle occupies a rectangle? Express in perctentages(%).
• Rotary cylinder
  In the rotary cylinder it is given: surface S = 96 cm² and volume V = 192 cm cubic. Calculate its radius and height.
• Annular area
  The square with side a = 1 is inscribed and circumscribed by circles. Find the annular area.
• Children's pool
  Children's pool at the swimming pool is 10m long, 5m wide and 50cm deep. Calculate: (a) how many m² of tiles are needed for lining the perimeter walls of the pool? (b) how many hectoliters of water will fit into the pool?
• Series
  Your task is express the sum of the following arithmetic series for n = 14: S(n) = 11 + 13 + 15 + 17 + ... + 2n+9 + 2n+11
• Water
  On the lawn which has area 914 m² rained 3 mm of water. How many liters of water rained?
• The diagram
  The diagram is a cone of radius 8cm and height 10cm. The diameter of the base is. ..
• Your Mom
  Your Mom can clean your entire house in 3 hours. However, your dad takes 5 hours to clean the house. How long it will take for them to clean the house if they work together? (Write the numerical answer round to the nearest thousandth)
• Products
  15 products are 48 € more expensive than 12 products. How many euros will it cost five same products?
• Rotary motion
  Find the orbital time, rotational frequency, and angular rate of the second and minute hands on the watch.
• Sphere area
  A cube with an edge 1 m long is a circumscribed sphere (vertices of the cube lie on a sphere's surface). Find the surface area of the sphere.