Basic operations and concepts - math word problems - page 260 of 332
Number of problems found: 6633
- Class - boys and girls
In the class are 60% boys and 40% girls. Long hair has 10% boys and 80% girls. a) What is the probability that a randomly chosen person has long hair? b) The selected person has long hair. What is the probability that it is a girl? - Mr. Product
The product of the ages of all of Mr. Product's children is 1,408. The youngest child's age is half the oldest child's age. How many children does Mr. Product have, and how old are they? - Comic number puzzle
Majka researched multi-digit numbers, in which odd and even numbers alternate regularly. Those who start with an odd number are called comics, and those who start with an even number are called cheerful. (For, number 32387 is comic, and number 4529 is hil - Map - route
A map has a scale of 1:40,000. How many centimetres will a route of 4.8 km be shown as on the map? - Bronze copper tin
Bronze is an alloy of copper and tin in a ratio of 1:4. How much copper does a bronze piece of jewelry weighing 25 g contain? - Several resistors
We have a box with the same resistors, so all of them have a resistance value of 200 ohms. Draw the connection of several resistors so that the resulting resistance is: a) 100 b) 120 (only 4 resistors) - Bronze
How much tin is in 3.6 kg of bronze if it contains 15%? - Nitric acid
We want to prepare 200 g of 30% nitric acid. We have enough 12% and 60% of this acid. How many of which will we need? - Hat and scarf
Katy knitted a scarf four times faster than a hat. Knitting together lasted 15 days. How much did she knit a hat? - Strawberries
Three people pick strawberries from 48 rows in 8 hours. How many hours do five people need to pick strawberries from 20 rows? - Salt solution
Calculate the weight of a 50% salt solution we prepare from 120 g of salt. - Worker packing time
Four workers packed the goods with the same output in 6 hours. In how many hours would five workers do the same job? Express it in hours and minutes. - Race route
Competitors drove two-fifths of the race route in 60 minutes. How long before they passed the first fifth? How long was the race? And did they still drive at the same speed? - Seamstress order
Eight seamstresses will make the order in 15 shifts. How many will be sewists if they have to complete an order three shifts earlier? - Cyclist travel time
The cyclist will travel 22 km in an hour and a half. How long would it take to drive 30 km? - Five combers
Five combers harvest 12 rows of strawberries in 4 hours. How many rows of strawberries will two combers harvest in 10 hours? - Tower building time
Two cardholders will build a tower of cards in 0.5 hours. In how many hours will five such a tower be built? - Blueberries
Five children collect 4 liters of blueberries in 1.5 hours. a) How many minutes do three children take 2 liters of blueberries? b) Eight children will take how many liters of blueberries in 3 hours? - Workers Days Hop Garden
Twenty-four combers combed the hop garden in 6.5 days. How many combers would have to work on combing the hop garden in 5 days? - Mixture
How many percentage mixtures do we get by adding 23 ml of matter to 89 ml of water?
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