Equations practice problems - page 138 of 250
Number of problems found: 4997
- Diamond diagonals
Find the diamond diagonal's lengths if the area is 156 cm² and the side is 13 cm long. - Dental check class
Class 7B is having a preventive dental check-up. Two dental caries were found in a quarter of the pupils and one caries in an eighth. Half of the class had all their teeth healthy. How many pupils go to class 7B if three pupils are absent on the day of th - Cell division
At the end we could have something simpler and a bit (at least mathematically) more fun... At the beginning there was nothing... But no, here we have at the beginning one single cell. This cell is not just any ordinary cell, it is special, because there i - Tomas Sisters Combined Age
Tomas is 15 years old and has three sisters. Martina is two, Karolina 5, and Zorka 6 years old. How many years will Tomas be as old as all his sisters? - Original Price After Discount
Determine the product's original price, which, after a 20% discount, costs 90 CZK. - Girls in class There are 12 more than boys, and the boys represent 30% of all pupils in the class. Find how many girls are in the class.
- Three friends
Cuba, Matthew, and their friend Adam worked at a part-time job over the weekend to fund a joint trip to the Alps planned for spring break. Cuba worked diligently and earned 11,000 CZK. Matthew, however, earned only one-third of the arithmetic mean of Adam - Test Score Unanswered Questions
The test has 50 questions. Four points are counted for each correct answer, 3 points are deducted for an incorrect answer, and 2 points are deducted for an unanswered question. Peter scored 108 points on the test but answered only 6 questions. How many qu - Tree planting calculation
The conservation unit planted clearings on 4/7 (this is a fraction) on Saturday; on Sunday, he had 2,100 trees to grow. How many trees have conservationists planted on both days? - Two trains
Through the bridge, long l = 240 m, the train passes through the constant speed at time t1 = 21 s. A train running along the traffic lights at the edge of the bridge passes the same speed at t2 = 9 s. a) What speed v did the train go? b) How long did a tr - Product tax calculation
The product was taxed at 20% and is sold for CZK 600. How many CZK was the product sold for if the government charged only 10% of taxes? - Test Points Correct Incorrect Tomáš was given the task of solving 10 problems. He received 3 points for each correctly solved, and 4 points were deducted for each incorrectly solved. He scored a total of 9 points. How many tasks did he solve correctly, and how many incorrectly or not
- Marriage sttus In our city, 3/5 of the women are married to 2/3 of the men. Find what part of the population is free.
- Mushrooms
Fresh mushrooms contain 88% water and dried 14% water. How many kilograms of fresh mushrooms should be collected to get 3 kg of dried? - Temperature and volume
The pool with a length of l = 50 m and a width of s = 15 m has a depth of h1 = 1.2 m at the shallowest part of the wall. The depth then gradually increases to a depth of h2 = 1.5 m in the middle of the pool. = 4.5 m walls in the deepest part of the pool. - Number reduction puzzle
Determine which number reduced by its three-sevenths is 120. - Grandmother Granddaughter Age Puzzle
Grandma is five times as old as her granddaughter today. 2 years ago, the grandmother was six years less than six times her granddaughter's age. How old is Grandma today? - Far country
In a country far away, the value of 3 pesos is 12 centavos, more than the value of 1 peso. How many centavos is 1 peso worth? - Father Son Age Equation The father is eight years older than three times the son's age. In 20 years, the father will be twice as old as his son. How many years is a father, and how many are a son?
- Base from Per Mille
Determine the base if 2.8 per mille is 50.
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