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Number of problems found: 414
- MO Z7 2025
Adela and Susan ate plums. On the first day, Adela ate three quarters of what Susan ate that day. On the second day, Susan ate three halves of what Adela ate that day. Together, they ate 31 plums over the two days, and each girl ate the entire number of p - Originally 84156
The pants cost 9.90 euros, which is 90% of the original price. How much did the pants cost originally? - At the post office
Maria paid three checks at the post office with a hundred-euro banknote. One for €19.95, the second for €50, and the third for €24.65. Each check was charged €1.40. How many euros did she receive? - Heating 2
The heating coil of the stove has an electrical resistance of 80 ohms and is connected to an electrical voltage of 230V. Calculate the electrical energy consumed in a year (365 days) if it is switched on for 2 hours a day. How much will we pay for the ene
- Tank - fuel prices
I have a car with a 50l tank. My task is to find out the price of a full tank of fuel by weighted average at the end of the year. In December, 30l of fuel was filled - 37.50 CZK, and in November 40l - 38.40 CZK. What is the price per 1 liter and the value - Table - tablecloth
Mrs. Vránová has a square table with a side length of 110 centimeters. She wants to have a square tablecloth sewn on it so that its corners extend beyond the edges of the table by 25 centimeters. What dimensions should the tablecloth have? - Create 2
Create a suitable table and fill in the data: The production of four machines takes a total of 80 hours. Each machine is produced for the same amount of time. How long does it take to produce 1 machine, 2 machines, 5 machines? - From tank 2
First 1/3 was drained from the water tank, then 1/4. There were 20 liters of water left in the tank. How many liters of water were in the tank at the beginning? - Air 2
The air distance between New York and Los Angeles is 3962 km. How many km is 1 cm on a map if the map scale is 1:1000000?
- Left-handed
There are 100 people in a room, 99% of whom are left-handed. How many left-handed people must leave the room to reduce this proportion to 98%? - Peter 27
Peter earned twice as much as Jano on his part-time job. Jano earned 50 euros less than Peter. How much did each of them earn? - Irregular
Calculate the area and perimeter of the garden that was created from a rectangular plot measuring 10 by 20 meters after transferring one corner measuring 6 by 7 meters. The separated rectangular plot has parallel sides to the main plot. Did the perimeter - Segments on the hypotenuse
A right triangle ABC has a hypotenuse of c=26cm. How many segments does the height vc=12 cm cut out on the hypotenuse c? What are the lengths of the sides a and b? What are the angles at the vertices A and B? - Thinking unknown n
I am thinking of a number. If I subtract 14 from it and multiply by 6, I get the number 210. What is the number I am thinking of?
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Do you have unsolved problem that you need help? Ask a question, and we will try to solve it. Solving math problems.
