Time + system of equations - practice problems - page 4 of 17
Number of problems found: 321
- Birthday 6092
Soňa and her aunt have a birthday, and her aunt is five times older than Soňa. When Soňa is a year younger than her aunt, her aunt will be eighty years old. How old is Sona now? - Younger 4782
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? - The train
The train passed the observer in the 20s and passed through a 1500m tunnel in 2 minutes. Calculate the speed (km/h) and train length. - Mr and Mrs
Mr. Calda and Mrs. Cald have a total of 139 years. How many years have when we known that Mr. Calda is nine years older than Mrs. Cald? - Temperature 80864
You have water at a temperature of 10°C and boiling water at a temperature of 100°C. How do you prepare 9 liters of water at a temperature of 30°C? - Husband 64914
Milan, Sara's husband, is four years older and twice as old as she was 17 years ago. How old are they? - Together 23211
Lenka is three times younger than her brother Lukas; they are 20 years old. How old is Lenka, and how many are Lukas? - Grandfather 17981
Today, my grandfather is four times older than his grandson. Two years ago, my grandfather was six years younger than five times his grandson's age. How old is your grandson today? - One-tenth 7312
The brother and sister will be a total of 73 years old. At present, a sister is one-tenths older than her brother. How old are they now? - Together 4273
Jan is five years older than Pavel. Jan's age is 7/6 Dusan's age. All the brothers are 195 years old together. How old is Jan? - Determine 3412
The average age of the siblings Standy, Radek, and Patricia are ten years. Standa is twice as old as Radek, and Patricia is two years younger than Radek. Determine the age of each sibling. - Younger 2826
Milan and Juraj are a total of 56 years old. Milan is eight years younger than Juraj. Please find out how old each of them is. - The ratio 9
The ratio of the present age of Rahul and Rohit is 5:7. Four years ago, Rohit age is 12 more than Raul's age. Then find their present age. - Lucka
Lucka reads a thrilling novel about the holidays. If she read 16 pages daily instead of 14, she would read the book one day earlier. How many pages does the novel have in total? - The ages
The ages of the four sons make an arithmetic sequence, the sum of which is the father's age today. In three years, the father's age will be the sum of the ages of the three eldest sons, and in the next two and three months, the father's age will be the su - Carla
Carla is five years old, and Jim is 13 years younger than Peter. One year ago, Peter's age was twice the sum of Carla's and Jim's. Find the present age of each one of them. - Triplets
Three years ago, the triplets Pavel, Petr, Luke, and their five-year-old sister Jane had been together for 25 years. How old is Jane today? - Three men
Alex is half younger than Jan, which is one-third younger than George. The sum of their ages is 48. How are these three men old? - Together 70014
Matej and Anton are 44 years old together. Matej is twice as old as Anton was when Matej was half as old as Anton will be when Anton is 3 times older than Matej was when Matej was 3 times as old as Anton. - Grandchildren 33491
Grandma is 72 years old. It's four times the sum of the ages of her two grandchildren. The age of the older of them is twice of a younger grandson. How old is your younger grandson?
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