Numbers - math word problems
Number of problems found: 2129
The average of 5 numbers is 108. What is its sum?
- Education for free
The Slovakia circulates a lot of myths, particularly ideas about what must be free. For example - education should be free - children of poor parents should know at least read and write. Calculate how much a student would have to pay per hour of teaching,
- Gear wheels
Two gear wheels, which fit together, have the number of teeth z1=58 and z2=149. Calculate the speed of the first wheel, if the second wheel rotates 1232 revolutions per minute.
How many rectangles with area 8713 cm2 whose sides are natural numbers are?
- Rectangle SS
Perimeter of a rectangle is 268 cm and its diagonal is 99.3 cm. Determine the dimensions of the rectangle.
- Tree trunk
Calculate the average tree trunk with a circumference of 149 cm.
Seedcake costs 44 cents. How many minimum seedcakes we must buy that we can pay in cash only whole euros?
What power has a pump output to move 4853 hl of water to a height of 31 m for 8 hours?
- DIY press
Under socialism regime was in some socialist countries to own a typewriter requires special permission. That has hindered the spread of DIY literature (manually transcribed through carbon copy paper for typewriters). Calculate how many typewriters today c
- ABS CN
Calculate the absolute value of complex number -15-29i.
Calculate the integer number which, divided by 34 gives 10 and the rest 25.
- Car range
Kia has an average diesel consumption of 3.9 liters per 100 kilometers. What is the range of the car for 179 euros if fuel costs 1.3 EUR/liter, if the tank has a volume of 55 liters?
- Fuel consumption
Škoda car has an average diesel consumption of 5.9 liters per 100 kilometers. What is the car range for a full tank of volume 70 liters?
- Forest nursery
In Forest nursery plant one pine to 1.9 m2. Calculate how many plants are planting in area 362 acres.
Steel pipe has a length 2.5 meters. About how many decimetres is 1/3 less than 4/8 of this steel pipe?
- Carbon dioxide
Calculate how many grams of oxygen are in 50 g of carbon dioxide CO2. Relative atomic mass of oxygen is 16 and of carbon is 12.
- Geometric mean
Calculate the geometric mean of numbers a=15.2 and b=25.6. Determine the mean by construction where a and b are the length of the lines.
56 children lined up in groups of three. How many children did not create a trio?
- Father and son
Father and son are together 78 years. Son is 25 years younger than father. How old is the son?
- Addition of Roman numbers
Added together and write as decimal number: LXVII + MLXIV