Grade - math word problems - page 592 of 950

Number of problems found: 18982

Diamond diagonals
Find the diamond diagonal's lengths if the area is 156 cm² and the side is 13 cm long.
Determinant 7506
We have a matrix of order n ≥ 3. If we add the last column to each column (including the last), how does its determinant change?
The cyclist
The cyclist drove from A to B, 60 km away. The first half drove at 30km/h, and the second at 20km/h. How long did it take for him?
Examination 7504
Class 7B is having a preventive dental check-up. Two dental caries were found in a quarter of the pupils and one caries in an eighth. Half of the class had all their teeth healthy. How many pupils go to class 7B if three pupils are absent on the day of th
Resistance 7503
The resistance of a 40W light bulb is 10 Ohms. What voltage source is connected to it? What current is flowing through it?
Adding mixed numbers
Add these two mixed numbers: 1 5/6 + 2 2/11=
Statistician 7500
A statistician monitored the variance of monthly wages and found its value to be 640,000. Determine the standard deviation of salaries if there is a one-off increase: a) about CZK 1,800, b) about 5%.
Wafers
They used 200 pieces to make wafers. One hundred fifty-seven topped with caramel topping and 100 with sugar topping. How many wafers did both toppings have?
Karolina 7498
Tomas is 15 years old and has three sisters. Martina is two, Karolina 5, and Zorka 6 years old. How many years will Tomas be as old as all his sisters?
Sugar production
From 1 ton of beet, 150 kg of sugar is produced. 450 kg of lime is consumed to clean 1 ton of sugar. Calculate how many kgs of lime are consumed when processing 1 ton of sugar beet.
Book 10
Monika wants to start reading a book. She calculated that if she reads exactly 14 pages every day, it will take her one page longer to read the book than if she reads exactly 16 pages every day. Calculate how many pages the book has. Determine how many da
Determine 7495
Determine the product's original price, which, after a 20% discount, costs 90 CZK.
Represent 7494
There are 12 more than boys, and the boys represent 30% of all pupils in the class. Find how many girls are in the class.
Three friends
Cuba, Matthew, and their friend Adam found a brigade during their weekend weekends because they wanted to make a joint trip to the Alps that they planned for spring break. Cuba enjoyed the skiing trip very much, so he was not lazy to get up and went to th
Incorrectly 7492
The test has 50 questions. Four points are counted for each correct answer, 3 points are deducted for an incorrect answer, and 2 points are deducted for an unanswered question. Peter scored 108 points on the test but answered only 6 questions. How many qu
Vinegar mixing
When we mix 70g water with 50g 8% vinegar, how many percent of the vinegar solution do we produce?
Conservationists 7490
The conservation unit planted clearings on 4/7 (this is a fraction) on Saturday; on Sunday, he had 2,100 trees to grow. How many trees have conservationists planted on both days?
Area to volume
If the surface area of a cube is 486, find its volume.
Determine 7488
The lengths of the edges of the two cubes are in the ratio 2:3. Determine how many times the surface of the larger cube is larger than the surface of the smaller cube.
Acceleration 7487
The runway of the aircraft on the mother ship is 49m long. Calculate the aircraft's acceleration so that its speed when leaving the ejection device reaches 252km/h.

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