Multiplication + reason - practice problems - page 17 of 18
Number of problems found: 360
- Group
A group of kids wanted to ride when the children were divided into groups of 3 children, one remained. When divided into groups of 4 children, one remains. When divided into groups of 6 children, one remains. After being divided into groups of 5 children,
- Pairs
Teachers must choose one pair of boys and girls from the five girls and four boys. A) How many such pairs of (M + F)? B) How many pairs were only boys (M + M)? C) How many are all possible pairs?
- Combi-triangle
Each square side is marked 10 different points outside the square's vertices. How many triangles can be constructed from this set of points, where each vertex of the triangle lies on the other side of the square?
- Unions
Calculate how much money per year would go to the treasury of unions if 976 thousand employees join unions with an average net salary of 587 euros and if union membership costs 1% of the net monthly salary.
- Chocholate
The table of chocolate is divided into squares on its surface. Lengthwise has 15 squares and widthwise 19 squares. We must chocolate broke into individual squares. How many times have we broken it to get only individual squares? It is not permitted to bre
- Cinema
How many ways can 11 free tickets to the premiere of "Jáchyme throw it in the machine" be divided between 6 pensioners?
- Saw
Imagine that the saw blade with a diameter 40 cm has one tooth colored with a different color. How long does the tooth's tip describe the path after 15 minutes if the blade is rotated 13365 times?
- Root
The root of the equation (x-10)² +4 = x² +35x is (equal or greater or less than zero). ...
- Drinking water
A man drinks a keg of water in 36 days, and a woman drinks in 65 days. How many days do they consume a keg together?
- Forestry workers
41 laborers have employed planted trees in the forest. For 7 hour work, a day would end job in 32 days. After 12 days, 7 laborers go forth? How many days are needed to complete planting trees in nurseries by others if they work 8 hours a day?
- School trip
School trip cost 247.2 Eur for one class (24 students). How much would a trip cost for two classes? (both classes together have 53 students)
- Homework
The monthly fee for the phone is 10 Eur and for the phone unit 0.06 Eur. How many families paid phones in the first quarter of Q1 if January 1 had on the counter 46674 units and on April 1 47495 units?
- Bus vs. train
The bus started from point A 15 minutes before the train started from the same place. The bus went at an average speed of 45 km/h, train at 54 km/h. To point B train and bus arrived simultaneously. Calculate the train journey time if the train and bus tra
- Chocolates
In the market, we have 3 kinds of chocolates. How many ways can we buy 8 chocolates?
- Store
2.1 EUR discounted one meter of the textile. Now, 10 m of textile costs the same as 8 m. Calculate the old and new prices of 1 m of textile.
- Bonus
The gross wage was 1323 USD, including the 25% bonus. How many USD were bonuses?
- Diophantus
We know little about this Greek mathematician from Alexandria, except that he lived around the 3rd century A.D. Thanks to an admirer who described his life through an algebraic riddle, we know at least something about it. Diophantus's youth lasted 1/6 of
- Brick weight
The brick weighs 5 kg and a half-brick. How much does one brick weigh?
- Carpenter
You want to cut the longboard into smaller pieces. Carpenter said that one board cut into two pieces would cost you 40 cents. But you need to cut the board into 5 parts. How much do you pay?
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