Equations practice problems - page 178 of 251
Number of problems found: 5001
- Number puzzle
I think the number when I multiply the imaginary number by three, we divide by the number 4 from the product of subtraction 4, and I add the imaginary number again to the proportion of 4. Which number do I think? - Youngest sibling
Peter, Leo, and Ike are siblings. Peter is three times as old than Leo, and Leo is three times younger than Ike. They are 28 years old together. How many years is the youngest of them? - Hamsters and guinea pigs
In the morning, they had two times more hamsters than guinea pigs in the store. After selling 4 guinea pigs and 4 hamsters, they were left with four times as many hamsters as guinea pigs. How many hamsters and guinea pigs did they have together in the sho - Percentages 5
$5.25 is 7 1/2% of what number? - Flowers + orchards + lawn
The garden around the flat house is divided as follows: 30 percent flowers, 35 percent orchards, and 150 square meters from the lawn. What is the total area? - Quadratic inequation
If 5x + x² > 100, then x is not - Addend calculation Calculate the larger of the two addends if you know that the smaller census is a third of the larger one, and their sum is 48
- Five-sevenths of a volume
Forty-two liters of water fill the barrel to two-thirds of its volume. If it is filled to five-sevenths of a volume, how many liters of water do we need to add? - Block volume
The sketch shows the net of a cuboid with a surface size of 150 cm². Calculate its volume. (MONITOR 9 - 2005/30 question.) - Plum dumplings
Three journeymen on their apprenticeship arrived completely exhausted at a tavern and ordered – it was at the end of summer – plum dumplings for supper. While supper was being prepared, they chattered and dozed at the table, until they fell soundly asleep - Family members ages The son, mother, and father are 96 years old. A mother is 23 years older than her son and five years younger than his father. How old is a son?
- System equations
Determine the smaller root of the root pair of the system of equations. 5a + 4b = 11 3a - 2b = 11 - Number property
Which number has such a property that if we increase it by 7, we get a number with the same absolute value as the original number? - Goats and geese
There are five animals in the yard. There are only goats and geese. They have a total of 14 legs. How many geese and how many goats are in the yard? - Syringe and patient
In 1 ampoule of 2 ml is 15 mg of Dipidol. The patient should receive 10 mg. How much ml do I draw into the syringe? - Dosage calculation There is 50 mg of Dolsin in 1 ampoule with a content of 1 ml. The patient should receive 70 mg. How many ml will I draw from the second ampoule into the syringe?
- Electricity consumption cost
Last year, Carol's family reduced its electricity consumption by 31% compared to the previous year and paid CZK 2883 less. How much CZK was electricity last year, and how many two years ago? - Ice cream servings
They sold 4/7 strawberry ice cream and 36 servings of vanilla ice cream in the store. How many servings of ice cream did they sell that day? - Trapezoid 15
The area of a trapezoid is 266. What is the value of x if the bases are b₁ = 2x − 3 and b₂ = 2x + 1, and the height is h = x + 4? - Cylinder diameter The volume of the cylinder is calculated as V = 1/4 pi times d on the type times v. Express the average d using the volume V and the height in the cylinder. Calculate d for V = 1000 l and v = 23 dm
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