Ratio + equation - practice problems - last page
Number of problems found: 357
- Gear
Two gears fit into each other and have a transfer of 1:2. The centers of gears are spaced 96 cm. What are the radii of the gears? - The www server
Calculate how many average minutes the web server is unavailable a year if the availability is 99.9999%. - Chocolate
Anthony bought 9 same chocolates for 18 Eur. How many euros will he pay for 19 chocolates? - Book
The printer used 4201 digits to number the pages of the thick book. How many pages does this book have?
- Inflation
What is better for people (employees)? ... - Pumps
The tank is filled with two pumps in 16 minutes. The first pump is filled in 30 minutes earlier than the second one. How many minutes is filled with the first pump? - Thrift woman
Calculate how long grandmother will save on new shoes priced 116 euros if she saves 2 Eur monthly. - Right triangle
The legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle. - Golden ratio
Divide the line of length 871 cm into two sections so that the ratio of shorter to greater is the same as the ratio of the greater section to the whole length of the line.
- Quiz
The tested student answered correctly on a 4/ 8 question. The wrong answer was 16. How many questions were answered? - Tractors
Fields go plow two tractors with various performances. The first tractor plows the whole field in 20 hours. The second tractor plows the whole field 4 hours kratšie. How long does it take to plow the whole field with two tractors? - Number ratio
Calculate two positive numbers. Its ratio is 6:18, and difference was 372. - Acid
The barrel is 79 liters of 60% acid. How many percent of acids occur when 4 liters are revoked and replaced with the same amount of water? - Ships
At 0:00, the ship set sail at 22 km/h. At 9:00 followed by 43 km/h sailboat. When does the sailboat catch up with the ship? How many minutes will catch uptake?
- Salary raise
The monthly salary was 620 Eur. During the year, it was raised to 727 Eur. Calculate the month from salary was increased that employee earned 7547 Eur during the whole year. - Volatile percents
Kent is working as a forex trader. He suffered a loss of 65.8 percent. Calculate what percentage you must now earn to lift from loss. - Greek railwayman
Lewis has worked for the Slovak railways since 2000. His salary is 950 €. His colleague Evgenias works at the Greek State Railways from 1984. Evgenias earns 5700 € per month. Calculate: a) how many times does Evgenias earn more than Lewis? b) how many tim
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