Time + reason - practice problems - page 11 of 19
Number of problems found: 366
- Years
Susan is three years. She will be old as Teodor now when he has 11. How old is Teodor today? - Adam and Ben
When Ben is so many years old to Adam today, Adam will be 23 years old. When Adam was as old as Ben, Ben was two years old. How old are you today, Ben and Adam? - Maintaining 5136
Petr succumbed to a bank's tempting offer, opened an account, and deposited CZK 1,051 into it. The account bore interest at 1.4%, credited once a year. The fee for maintaining this account was only CZK 140 per year. After seven years, he enjoyed how his d - Grandsons
Janko is the fifth oldest and, at the same time, the fifth youngest grandson. How many grandchildren do grandparents have?
- April (month)
April has 30 days. Roman saves his money in the box for the whole month. Every third day you save 10 cents. How many cents did Roman save during the entire month he started saving on April 1? - Inspectors 5037
Five inspectors will catch an average of 70 black passengers in 6 days. How many black passengers are caught by nine inspectors in 10 days? - Regularly 5036
Out of 129 1st-year students, 116 students go to lunch or dinner regularly, and 62 students go to one of these meals at most. At the same time, 46 students go to lunch more than to dinner. How many students go to lunch and dinner, how many go to dinner, a - Grandfather
The grandfather is three years older than the grandmother. The average age of the grandmother, the grandfather, and their seven grandchildren is 28. The grandchildren have a total of 105 years. Calculate how old grandfather is. - Czech crown salary
The monthly salary of the employee is CZK 10,800. In the course of the year, the bulk salary increased by CZK 500. Calculate which employer increased month (1 ... 12) if its annual income was 133,600 CZK.
- Oil tank and pipes
Two oil pipelines can fill the underground oil tank. The first is filled in 72 hours, and the second in 48 hours. How many hours from when the first pipeline began to fill the oil is necessary to start filling it with the second to fill in 1 and 1/2 days? - Father 4952
A father and son mow the lawn in 3 hours. How much would a father do on his own if they both cut just as fast? - Workers 4949
The three workers will dig one big pit in two days. How many workers would dig seven large pits in three days? - Alarm clock
The old watchmaker has a unique digital alarm in its collection that rings whenever the sum of the alarm's digits equals 21. Find out when the alarm clock will ring. What is their number? List all options. - Three elephants
Three elephants eat three piles of hay in 150 minutes. For how long do 96 elephants eat 96 stacks of hay?
- Rings - intersect
There are 15 pupils on the sporting ring. Ten pupils go to football, eight pupils go to floorball. How many pupils go to both rings at the same time? - Earth's diameter
The Earth's diameter on the equator is approximately 12750 km. How long does the Gripen fly over the Earth above the equator at 10 km if it is at an average speed of 1500 km/h? - 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? - Midnight
How many hours are if the time elapsed since 8:00 is 2/5 of the time that will pass until midnight? - Driver
The driver of the supply car reckoned that at the average speed of 72 km/h arrived at the warehouse for 1 1/4 hours. After 30 km, however, he unintentionally drove to the gas station and had ten minutes delay. At what average speed would you have to go th
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