Examples of equations for practice for 14 year olds - page 14 of 89
Number of problems found: 1774
- Arithmetic mean - parabola
Find the value of k so that k² + 2k – 3 is the arithmetic mean between k² + 4k + 5 and k² – 6k + 10. - Žaneta 78044
Juraj and Žaneta are 48 years old. Juraj is twice as old as Žaneta. How old is Juraj, and how old is Žaneta? - One-third 77724
The cuboid has a body diagonal u=25 cm, and side b is one-third longer than side a. What is the volume of the cuboid? - The midpoint 2
Find the value of x if M is the midpoint of PQ, PQ=10x−7, and PM=14.
- A solution
A solution of salt and water has 15% salt by weight. From it, 30 kg evaporated, and the solution now contains 20% salt. Find the original quantity of the solution. - Angles in a triangle
In a triangle, the first angle measures a number plus 45°, and the second angle is 30° less than the first angle. The third angle is two times the number more than the first angle. What are the measurements of each angle of the triangle? - You buy
You buy two soft drinks and 24 toffees at the tuck shop. One soft drink costs six times as much as one toffee. The total cost of your purchase is R54. Determine the cost of one toffee. - I spent
I spent 3/8 of my money in one shop,1/4 in a second shop, and 1/8 in a third shop. I then had $5 left. How much did I start with? - Cows and pigs
There are 3/4 as many cows as pigs on an animal farm. If there are 35 pigs and cows on the farm, how many of them are pigs?
- Add number
Suppose the same number is added to the one near raider and denominator of math fractions seven and nine. The result is .9. What is the number? - One angle
One angle is 10 degrees more than four times the measure of the other angle. Together they have a sum of 120 degrees. What is the measure of each angle? - After 6
After buying half a dozen eggs, three cans of sardines, and a pack of milk, Enya received a change of P0.50 from her P200. The pack of milk costs P105, and a can of sardines costs P16.50. How much is the price of an egg? - Tanya
Tanya bought three adult tickets and one children's ticket to a movie for $22.10. Li bought five adult tickets and four children's tickets for $43.60. Find the cost of one adult ticket and the cost of one children's ticket. - Score on tests
On the first six tests in his Mathematics subject, his scores were 92, 82, 86, 93, 96, and 91. If he took the seventh test and raised the mean of his scores by exactly one point, what is his score on the 7th test?
- Henry
Henry has scored 72, 67, 82, and 79 on his Algebra tests. Use an inequality to find the scores he must take on the final exam to pass the course with an average of 77 or higher, given that the final exam counts as two tests. - Jen and Steve
Jen and Steve plan to read a series of famous books. Jen has already read ten books and will continue to read three books per week. Steve, who hasn't started reading the series yet, will read four books per week. How long will it take for Steve to be read - Dividing money 6
P 49,000 is to be divided among three children, X, Y, and Z. If X will receive double that of Y. Y will receive double that of Z, how much will Z will receive? - I bought 2
I bought two bottles of alcohol and two sanitizers for Php126. How much is a bottle of alcohol if the cost of alcohol is five times the cost of sanitizer? - Fuel volume
1/2 of a tank is filled with oil when 36 liters are removed, and the remaining oil fills 1/10 of the tank. What fraction of the total is the amount of oil removed?
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