# Themes, topics - math word problems - page 153 of 154

This page contains thematic word problems. We have about 20 main topics, such as motion problems, mixtures, work problems etc. Please choose a specific topic that interests you from the menu. Examples within a topic usually train similar knowledge. For example, in movement tasks, terms such as distance, speed, and time often occur.#### Number of problems found: 3074

- Wiring

The conduit has a cross-section 54² mm. Maybe put it into 6 conductors with a cross section S2 $mm²? - Cyclist

The cyclist goes uphill 2 km for 7.4 minutes and downhill minutes for 4.8 minutes. Both applied to the pedals with the same force. How long does he pass 2 km by plane? - Floor

The room's floor area is 31 m² and has a width of 4.3 m. How many centimeters of circumference measured the floor on the map at the scale 1:75? - Daily average

Calculate the average temperature during the day, when 14 hours were 24 °C and 10 hours was 14 °C.

- Car - simple

Car is traveling 77 km per hour. How long distance does it travel in 1 minute? - Map

Forest has an area of 36 ha. How much area is occupied by forest on the map at scale 1:500? - Triangle P2

Can a triangle have two right angles? - Triangle

Prove whether you can construct a triangle ABC if a=8 cm, b=6 cm, c=10 cm. - Pumps

The tank is filled with two pumps in 16 minutes. The first pump is filled in 30 minutes earlier than the second one. How many minutes is filled with the first pump?

- Reciprocal

It is true (prove it) that if a > b > 0: (1)/(a)< (1)/(b) - Pipes

The water pipe has a cross-section 1184 cm². An hour has passed 743 m³ of water. How much water flows through the pipe with cross-section 300 cm² per 6 hours if water flows at the same speed? - Gold wire

From one gram of gold was pulled wire 1.4 km length. What is its diameter if the density of Au is ρ=19.5 g/cm³? - Proof I

When added to the product of two consecutive integers larger one, we get the square larger one. Is this true or not? - Pump

What power does a pump output to move 1060 hl of water to a height of 43 m for 8 hours?

- Compound interest

Calculate the time when the deposit in the bank with interest 2.6% p.a. doubles. - Carbon dioxide

Calculate how many grams of oxygen are in 58 grams of carbon dioxide CO_{2}. The relative atomic mass of oxygen is 16 and of carbon is 12. - Air mass

What is the weight of the air in a classroom with dimensions 10 m × 3 m × 3 m? The air density is 1.293 kg/m³. - Wind drift

The plane flies at 900 km/h, passing distance 1800 kilometers with the wind and once again against the wind for 4 h 1 min. What is the wind speed? - The cyclist

The cyclist went from village to town. The first half of the journey went at 24 km/h. The second half of the journey, which mostly fell, went at 38 km/h. All journeys took 94 minutes. Calculate the distance from the village to the town.

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