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Vili ate three pieces of pie . If it piece is 1/8 how much pie did he eat?
Compare fractions ?. Which fraction of the lower?
In human body the blood is about 7.7% body weight. How many kilograms of blood is in the human body with weight 96 kg?
How many millimeters is 1/100 meters?
In the camp are children. 1/4 went on a trip, 1/2 went to bathe and 99 children remained in the room. How many children are in camp?
Gross wage was 1113 USD including 16% bonus. How many USD were bonuses?
We know little about this Greek mathematician from Alexandria, except that he lived around 3rd century A.D. Thanks to an admirer of his, who described his life by means of an algebraic riddle, we know at least something about his life. Diophantus's youth l
On the meadow grazing horses, cows and sheep, together less than 200. If cows were 45 times more, horses 60 times more and sheep 35 times more than there are now, their numbers would equall. How many horses, cows and sheep are on the meadow together?
The boys changed stamps, beads and balls. For 50 balls is 35 stamps, 20 balls is 28 stamps. How many beads is for 1 ball?
6 pump fills the tank for 3 and a half days. How long will fill the tank 7 equally powerful pumps?
- Forestry workers
In the forest is employed 63 laborers planting trees in nurseries. For 11 hour work day would end job in 43 days. After 14 days, 22 laborers go forth. How many days is needed to complete a planting trees in nurseries by others, if they will work 15 hours
In an company of 1050 employees are 2/3 women. How many women work in the company?
- Motion problem
From Bratislavy to Martina go car at speed 83 km/h. From Martina to Bratislavy go another car at speed 62 km/h. How many minutes before the meeting will be cars 21 km away?
Calculate how much of the school year (202 days long) take Christmas holidays 16 days long. Expressed as a decimal number and as a percentage.
- Classroom 4
In a class of 36 pupils, 2/3 are girls. How much it is in a class girls and boys?
- Water in body
Water in the human organism of all the compounds represented, constitutes about 3/5 of the total weight. How many kilograms of water is in your body when you weigh 64 kg?
Of the 72 wet seeds 7/8 germinated. How many seeds germinate?
- 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.
- The tap
For one day flows 148 l of water out of the tap. How much water will flow out for 3/4 day?
- Gear wheels
Two gear wheels, which fit together have number of teeth z1=132 and z2=123. Calculate the speed of the first wheel, if the second wheel rotates 247 revolutions per minute.