Math practice for 13 year olds - page 82 of 436

Number of problems found: 8718

Milan Eduard savings
Milo saved 120 euros per year, and Eduard saved 150 euros. By what percentage did Eduard save more?
Plant employee total
Three hundred forty-four women are employed at the GUMÁR plant. The remaining 57% of employees are men. How many employees does the entire GUMÁR plant have?
Highway construction weeks
The first group of construction workers would build a certain section of highway in 15 weeks, and the second group would make it in 10 weeks. After four weeks of working together, the second group was dismissed, and only the first group continued to work.
Square triangle area
The figure shows the squares ABCD, EFCA, CHCE, and IJHE. Points S, B, F, and G are, respectively, the centers of these squares. Line segment AC is 1 cm long. Determine the area of triangle IJS. Please help...
Exchange fax sale
The merchant bought 5 telephone exchanges and 10 faxes for 8,500 euros. How much did he sell them for if the sale price was 30% higher than the purchase price?
Bridge pillar length
One-fifth of the bridge pillar is embedded in the ground. One-third of its length is in the water, and 1.4 m protrudes above the surface. Determine the length of the bridge pillar.
Rod part division
The rod was divided into three parts. The first part measured one-third of the length, the second one-third of the rest, and the third part was 20 cm. Calculate the rod's original length and the individual parts' lengths.
City baths
In the city baths, each visitor pays 100 Kč (Czech crown) for 90 minutes. With a city card, the visitor pays for the same time 50 Kč. The price of the city card is 300 Kč. Martin and Emil always go swimming together and their visit lasts exactly 90 minute
Store spending remainder
I spent a tenth in the store on vegetables and 3 times more on sweets. I have 60 euros left. How many euros did I have?
Football field scale
What is the scale of the city plan if the new football field with dimensions of 90 m by 120 m is shown on it as a rectangle with dimensions of 3 cm by 4 cm?
Rectangle side percentage
One side of a rectangle is 45% of the length of its other side. What are the dimensions of a rectangle if its perimeter is 101.5 cm?
Consecutive number sum
The sum of three consecutive numbers is 18. What are the numbers?
Grandson uncle age
The grandson is 11 years old, and the uncle is 59. In how many years will the uncle be 3 times as old?
Paper strip folding
A rectangular strip of paper measuring 4 cm x 13 cm is folded as shown. The two resulting rectangles have areas P and Q, where P = 2Q. Calculate the value of x. Note divide the side of 13 cm by x and 13-x.
Lenka book library
Helen has 30% fewer books in her library than Philip but 40% more than Ivan. Philip has 250 books. How many books does Ivan have?
Student grade percentage
There are 32 students in the class; 17 are awarded, 14 passed, and 1 failed. Determine the number percentages of students with honors, successful and not successful students
Cone sphere volume
A sphere is inscribed in an equilateral cone with a base diameter of 12 cm. Calculate the volume of both bodies. What percentage of the volume of the cone is filled by the inscribed sphere?
Men money denarii
Two men talk about how much money each has. The first says to the second: If you give me 12 denarii, we will both have the same. "Second branch: If you give me 12 denarii, I will have ten times more than you. How many denarii did each of them have?
Cylinder diameter height
A cylinder has the same diameter as its height. Calculate these data if the surface is 200 cm². Report the results to the nearest millimeter.
Girls pocket money
Zuzana, Anna, and Eliška receive pocket money every month. They donated part - Zuzana 40%, Anna 50% and Eliška CZK 195. If we add up all 3 amounts and divide the sum by 3, the result will correspond to 4/9 of the pocket money of each of the girls. What is

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