Arithmetic - math word problems
Lawyer got to pay 840 Euros in banknotes of 20 and 50 Eur. Total got 18 banknotes. How many was which?
Willie got birthday 6 colour pens in different colors. How many ways he can give them side by side in pencil?
- Cube in ball
Cube is inscribed into sphere of radius 241 cm. How many percent is the volume of cube of the volume of sphere?
How big is area of circle if its circumference is 80.6 cm?
- Hollow sphere
Calculate the weight of a hollow tungsten sphere (density 19.3 g/cm3), if the inner diameter is 14 cm and wall thickness is 3 mm.
- Lead cube
Calculate the edge of the cube made from lead, which weighs 19 kg. The density of lead is 11341 kg/m3.
- Morse alphabet
Calculate how many words of Morse code to create compiling commas and dots in the words of one to six characters.
27 students of 6.D class is going to a trip. They pay 9 € each. The teacher got 153 €. How many children have not paid?
In the box are 6 bulbs with power 75 W, 14 bulbs with power 40 W and 15 with 60 W. Calculate probability that a randomly selected bulb is:
- Square diagonal
Calculate the length of the square diagonal if the perimeter is 476 cm.
- Ultra expensive ramps
The village Čakajovce have two level railway crossings (the ramps), the railway company ZSR decided to replace it. The price for upgrading the two crossings is 302065 Euros. Calculate how many houses for 77000 euros is possible to obtain at this price. Ca
Area of rectangle is 3002. Its length is 41 larger than the width. What are the dimensions of the rectangle?
Average of 7 numbers is 65. What is its sum?
How many different flags can be made from colors red, yellow, blue, green, white so that each flag consisted of three different colors?
- Reconstruction of the corridor
Calculate how many minutes will be reduced to travel 187 km long railway corridor, where the maximum speed increases from 120 km/h to 160 km/h. Calculate how many minutes will shorten travel time, if we consider that the train must stop at 6 stations, eac
The owner of the house is insured against natural disasters and pays 0.04% annually of the value of house 77 Eur. Calculate the value of the house. Calculate the probability of disaster, if you know that 48% of the insurance is to pay damages.
- Triangle SSS
Calculate perimeter and area of a triangle ABC, if a=42, b=57 and c=42.
- Triangle ABC
Right triangle ABC with right angle at the C, |BC|=18, |AB|=33. Calculate the height of the triangle hAB to the side AB.
- Bits, bytes
Calculate how many different numbers can be encoded in 16-bit binary word?
- Circle chord
What is the length d of the chord circle of diameter 51 mm, if the distance from the center circle is 19 mm?