Themes, topics - math word problems - page 173 of 174
Number of problems found: 3474
- Daily average
Calculate the average temperature during the day if the temperature was 24 °C for 14 hours and 14 °C for 10 hours. - Car - simple
A car is travelling at 77 km per hour. What distance does it cover in 1 minute? - Map
A forest has an area of 77 ha. What area does it occupy on a map at scale 1:10000? - Triangle P2
Can a triangle have two right angles? - Triangle
Prove whether a triangle ABC with the given properties can be constructed: a=8 cm, b=6 cm, c=10 cm. - Pumps
A tank is filled by two pumps working together in 23 minutes. The first pump alone fills the tank 37 minutes faster than the second pump alone. How long does it take the first pump to fill the tank on its own? - Reciprocal
Prove that if a > b > 0, then: (1)/(a)< (1)/(b) - Pipes
A water pipe has a cross-section of 1903 cm². In one hour, 859 m³ of water flows through it. How much water flows through a pipe with a cross-section of 300 cm² in 11 hours, if the water flows at the same speed? - Gold wire
A wire of length 1.4 km was drawn from one gram of gold. What is its diameter if the density of gold is ρ = 19.5 g/cm³? - Proof I
When the larger of two consecutive integers is added to the product of those two integers, the result is the square of the larger integer. Is this true? - Bulbs
A box contains 16 bulbs of 75 W, 14 bulbs of 40 W, and 10 bulbs of 50 W. Calculate the probability that a randomly selected bulb is: a) 40 W b) 75 W or 40 W - Train
A train travels a section of line in 55 minutes at a speed of 70 km/h. At what speed would it need to travel to shorten the journey time by 16 minutes? - Pump
What power output must a pump have to raise 1060 hl of water to a height of 43 m in 8 hours? - Fan
A fan rotates at 217 RPM. Calculate the period of one rotation. - Compound interest
Calculate the time it takes for a bank deposit earning 2.6% p.a. interest to double. - Carbon dioxide
Calculate how many grams of oxygen are in 59 grams of carbon dioxide CO2. The relative atomic mass of oxygen is 16, and of carbon is 12. - Air mass
What is the mass of the air in a classroom with dimensions 10 m × 3 m × 3 m? The density of air is 1.293 kg/m³. - Wind drift
A plane flies at 780 km/h airspeed. It covers a distance of 1200 km with the wind and then the same distance against the wind in a total of 3 h 5 min. What is the wind speed? - The cyclist
A cyclist travelled from a village to a town. The first half of the journey was at 24 km/h. The second half, which was mostly downhill, was at 38 km/h. The entire journey took 94 minutes. Calculate the distance from the village to the town. - Widescreen monitor
Widescreen monitors and televisions have flooded the market. Calculate the screen area of an LCD monitor with a diagonal of 27 inches at a 4:3 aspect ratio and then at a 16:9 aspect ratio. Is buying a widescreen monitor with the same diagonal more advanta
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