Examples of equations for practice for 14 year olds - page 19 of 87
Number of problems found: 1738
- Medians
Calculate the sides of a right triangle if the length of the medians to the legs are ta = 25 cm and tb=30 cm. - Golden ratio
Divide the line of length 14 cm into two sections so that the ratio of shorter to greater is the same as the ratio of the greater section to the whole length of the line. - Numbers 82320
5% of the first and 4% of the second numbers add up to 46. 4% of the first and 5% of the second numbers add up to 44. What are the numbers? - Occupied 82715
Fifty pupils were in the camp; they lived in double and triple rooms. They occupied 20 rooms, many of which were two- and three-story. Please proceed. - Denominations 82479
CZK 8,000 was paid out in fifty pieces of banknotes in denominations of CZK 100 and CZK 200. How many were there? - Arithmetic 81453
A set of numbers 5,8,13,15,17,19 is given. What number should be added so that the arithmetic mean is 16? - Peter 70794
Peter is x years old. Juraj is 2/5 older than Peter. They are 72 years old in total. How old is Peter, and how old is Juraj? - Eighth-graders 66654
The number of eighth graders in primary school is 80 percent of the number of ninth graders. There are 54 eighths and ninths. How many ninth-graders go to this school? - Earlier 66144
If Petra read four pages more a day, she would read the book two days earlier than if she read six pages a day. How many pages does the book have? - Gardeners 47883
Gardeners have planted 1,100 flowers. Pansies are 280 less than tulips, and 40 daffodils than pansies. How many pansies have they planted? - Remaining 47271
Forty percent of all library readers have already paid the annual reader fee, so the remaining 264 have to pay the fee. How many readers does the library have? - Assistant 39951
The worker performs the repair work in 20 days, and his assistant does the job himself in 60 days. How many days would they work together? - Barborka 36393
Adela and Barbora have a total of 34 candies. If Barbora gives Adela 2 candies, they will have the same. How many candies does Adela have, and how many Barbora? - Calculate 27351
There were goats and chickens in the yard. The number of all heads was 15. The number of all legs was 40. Calculate how many hens there were. Every animal has all its legs. - Solutions 8481
For which integers x is the ratio (x + 11) / (x + 7) an integer? Find all solutions. - Dimensions 7912
How many blocks have integer dimensions of the edges of the surface is 48 m²? - Children 7350
Mom sent half of her children and half a child shopping. Only one of her children remained at home. How many children does my mother have? - Karel's 7305
Paul's age is 60% of Karel's age. In 15 years, Paul's age will equal 80% of Karel's age. How old is Pavel? - Father 7222
Now a father is five times as old as a son. In 2 years, the father will be four times as old as the son. How old is Dad, and how many are Son now? - Multiplied 7208
Which fraction number must be multiplied by 40 to get a 6% smaller number?
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