Mass - math word problems - page 72 of 79
Number of problems found: 1568
- On the farm
On the farm, 70 heads of cattle were housed with a food supply for 180 days. After 60 days, ten heads of cattle were sold, and for the next 30 days, they sold ten more. How many days is a sufficient supply of feed for the remaining cattle? - Cabinet painting
The cabinet is shaped like a block, with dimensions 120 cm and 150 cm on the front side and 120 cm and 60 cm on the upper wall. It is painted twice on the outside. When 1 kg of paint is enough to paint 8 m2, how much paint is used to paint the - Coffee
A coffee merchant has Robusta and Arabica coffee beans. 1 kg of Robusta costs 450 CZK, and 1 kg of Arabica is 300 CZK more expensive. Calculate how many kilograms of Robusta and Arabica will need to produce 30 kg of the mixture so that the mixture costs 4 - Nine balls
Imagine you have nine identical-looking balls, one of which is heavier than the others. You have a balance scale. Describe a procedure to find the heavier ball. What is the minimum number of weighings required? - Inclined plane
On the inclined plane with an inclination angle of 30°, we will put the body (fixed point) with mass 9 kg. Determine the acceleration of the body motion on an inclined plane. - Mass
The thickness of a metallic tube is 1 cm, and its outer radius is 11 cm. Find the mass of such a 1 m long tube if the metal density is 7.5 g per cubic cm. - two spacecraft
Recently, two spacecraft successfully landed on two small planets labeled α and β. Both ships were equipped with sensitive sensors that measured the basic parameters of the asteroids. The sensors found that the day α took six times longer on planet α than - Coal storage
The coal storage distribution received coal shipment within three days. On the first day, distribute a third of the shipments, on the second day of two-fifths of the rest, and on the third day, 300 tons of coal. How many tons of coal were distributed firs - Farmers
Farmers loaded into a truck of fruit and vegetables intended for the store. Ten boxes of 5 kg pears, eight boxes of 6 kg plums, seven boxes of 9 kg of carrots, and ten bags of 50 kg of potatoes. How many kilograms of fruit and vegetables are loaded in tot - Aluminum wire
Aluminum wire of 3 mm diameter has a total weight of 1909 kg and a density of 2700 kg/m³. How long is the wire bundle? - Cuboid 5
Calculate the mass of the cuboid with dimensions of 12 cm, 0.8 dm, and 100 mm made from spruce wood (density ρ = 550 kg/m³). - Flywheel
The flywheel turns 450 rev/min (RPM). Determine the magnitude of the normal acceleration of the flywheel point, which is 10 cm from the rotation axis. - Children
Margaret and Zdena weigh the same, and Petra weighs 3 kg more. Together, they weigh 156 kg. How much do they weigh? - Compare
What's more? Fill in the signs of equality or inequality: 12 000mg ... 0,12kg 12t ... 0,12kg 14kg ... 0,014t 423mg ... 0,423kg 12,3g ... 0,001 23kg 89g ... 89 000kg - Bricks
Openings in perforated bricks occupy 10%, and brick has dimensions of 30 cm, 15 cm, and 7.5 cm. Calculate a) the weight of a perforated brick if you know that the density of the full brick material is p = 1800 kg/m³ (1.8 kg/dm³) b) the number of perforate - Nectar
Nectar collected by bees contains 70% water. The nectar of the same process produces honey which has 19% water. How many kilograms of nectar do bees need to collect to make 1 kg of honey? - Bread
Five of the same breads have the same weight as three pieces and 4 kg of fruit. What weight is one piece of bread? - Alcohol mixing
How much 55% alcohol must we add to 1,500 g of 80% alcohol to obtain a 60% solution? How much 60% alcohol is produced? - Spirit From 55% and 80% spirit, we would like to produce 0.2 kg of 60% spirit. How many of them must we use in a solution?
- Container with water
The weight of a container with water is 2.48 kg. Suppose the cast is 75% water, and the container with water weighs 0.98 kg. Determine the weight of the empty container. How much water was originally in the container?
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