Basic operations and concepts - math word problems - page 59 of 323

Number of problems found: 6443

Matrix determinant
The determinant of the inverse matrix to matrix B has a value of 0.25. What is the value of the determinant of matrix B?
Fertilizer weight
Fertilizer for gardeners contains the following trace elements: bor. ... ..minimum 0.3promile weight. What is the smallest weight of each trace element in a five-kilogram fertilizer package?
Pumps
Five pumps pumped 1,800 hl of water for 3 hours. How many hectoliters of water did the same two powerful pumps pump for six hours?
Function continuity
Specify the point at which the sgn x function has no continuity.
Continuous function
Is there a continuous function that has no derivative at every point?
Dried apples
How many kilograms of fresh apples are needed for 120 kg of dried apples when we get 75 kg of dried apples from 0.4 tons of fresh apples?
Temporary sale off
With a temporary price reduction, the jacket's original fee of CZK 1,850 was reduced by 20%. Later, it was raised again by 20%. What was the jacket's final price?
Baking bread
When grinding 100 kg of grain, we obtain 75 kg of flour for food purposes, about 23 kg of bran, which has further use, and about 2 kg is waste. 4.5 kg of bread is baked from 4 kg of flour. a) Baker can bake how many kilograms of bread from 100 kg grain? b
Egg boiling
One egg is boiled for 5 minutes. How many minutes will five eggs be cooked?
Gasoline
The chauffeur paid 54 euros for a nearly full tank of 40 liters of gasoline. If the car has an average fuel consumption of 7 liters per 100 kilometers, how many euros will it cost to travel 250 km?
Share price
The initial share price first fell by 2%, and then this new price rose by 20%. The final share price is CZK 2,400. Calculate the initial share price.
Break percentage
Students have classes from 8:00 to 12:30. One 15-minute break and three 10-minute breaks between lessons. What percentage of teaching is breaking?
Number ratio
Change the numbers 34, 21, and 5.5 in a ratio of 5:2.
Number increase
Increase number 160 by: a) 25% b) 30% c) 150%
Rails
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways?
Cacao
Cacao contains 34% filling. How many grams of fill are in 130 g cacao?
Coconut percentage
The bar contains 81g of coconut per 200g. What percentage of coconut does the bar have?
Milk consumption
Three students drink 2 liters of milk a week. How many liters of milk do nine students drink in two weeks?
Cocoa percentage
Chocolate has 86% cocoa. Determine how many grams of cocoa are in 165-gram chocolate.
Percentage calculation
Determine how much equals 16% of a) 32, b) 44, c) 34, d) 25

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