Algebra - practice problems
Algebra is a branch of mathematics that uses not only numbers and characters but also letters to solve operations. For example 3x+5x is 8x. So working with expressions, solving equations, systems of equations.Number of problems found: 5821
- Two friends 5
Two friends, X and Y. X is 36 years old and Y is 16 years. In how many years X will be twice as old as Y? - 4100 USD
4100 USD was distributed in 50 boys and girls. Each boy got $ 90 and each girl $ 65. Then, find the number of boys. - 5 yrs 5 yrs ago, the average age of Rasmi and Suravi was 20 yr. Now, the average age of Rasmi, Suravi and Mita is 30 yrs. What will be the age of Mita after 15 years?
- Reciprocal in equation
A positive number, when increased by 10 equals 200 times its reciprocal. What is the number?
- Horses and hens
In a park, there are some horses and some hens. If total number of heads 68 and number of legs together is 198. Then find the number of hens in the park. - Sarah 7
Sarah bought snacks for her team's practice. She bought a bag of chips for $1.56 and a 20-pack of juice bottles. The total cost before tax was $33.96. Write and solve an equation which can be used to determine, how much each bottle of juice cost. - Expression - two variables
The formula with two variables is given: y=5*x+38. Solve for x. - The supplementary angles
Two supplementary angles differ by 50°, find the measure of each angle. - Repeating to infinity
How do I express 0.99999999… as a fraction? (nine repeating) Another questions: Can you write .9999 repeating as a fraction? How do you turn 0.9 repeating into a fraction?
- Twice the unknown
I am twice a number. If -8 is subtracted from me, the answer is 6. What am I? - 5 years
5 years ago the age of a father was thrice the age of his son. In 5 years time, the age of the father will be twice the age of his son at that time. Find their present ages. - Money exchange
A told B, "If you give me 1/3 of your money I'll be 50 USD". In turn B told A, " If you give me 9 USD then we'll be the same amount of money". Find their money. - The sum 50 The sum of five consecutive integers is 385. Which one of these five integers is prime?
- LCM and HCF 3 LCM of two integers is 1237. What is their HCF?
- System of equations
Solve the following system of equations: 2x-5y=4 5x-3y=4 - Two games
In a class of 65 students, 30 students play cricket, 20 students play tennis, and 10 students play both games. Then, find the number of students who play neither. - Simple equation 12 Three times a number divided by 2 plus 5 equals 20. Find the number.
- A tank 3
A tank is 3/5 full of water. 50 liters more of water is required to fill the tank, how many liters of water can the tank hold? - Big cities
City A has a population of 136000 which is decreasing at the rate of 2400/yr. City B has a population of 84000 which is increasing at the rate of 1600/yr.In how years will the population of two cities become equal?
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