Mass + equation - practice problems - page 4 of 13
Number of problems found: 259
- Average weight
Mom bought six apples with an average weight of 130 g - If she took one apple out of the bag, the average weight of the remaining apples changed to 140 g. What was the weight of the removed apple? - Kilograms 39911
In a luxury praline factory, they prepared 3.2 kg of a mixture of two types of candies for CZK 273 per 1 kg. Marzipan candies cost 345 CZK/kg and nougat 255 CZK/kg. How many kilograms of each type of candy were used? - Solution 38451
Prepare 2 liters (kg) of a 3% salt solution in water. - Salicylic 38401
Prepare 600 g of an 8% solution of salicylic acid. - Solution 38391
Prepare 100g of a 15% blue rock solution. - Saleswoman 37041
The saleswoman mixed two types of candies into the cone. Half a kilo of fruit at 90 CZK per kilogram and 400 g of nut at 117 CZK per kilogram. How many crowns will 1 kg of this mixture cost? - Fertilizer 34851
Urea contains 45% nitrogen. How much fertilizer will be needed per 1 hectare if you supply 30 kg of pure nitrogen? - Kilograms 31301
From two types of tea for 160 CZK per 1 kg and 220 CZK per kilogram, 20 kilograms of the mixture for 205 CZK per kilogram is to be prepared. How many kilograms of each type of tea need to be mixed? - Mixture of coffee
They have to prepare a mixture of coffee in packing centers, so 1 kg costs 240 CZK. There are two types of coffee in stock at the price of 220 CZK per 1 kg and 300 CZK per 1 kg. How many kilograms of each species need to be mixed to prepare 50 kg of the r - Three-kilo 29811
A four-kilo turkey is 70 CZK more expensive than a three-kilo turkey. How much is a turkey weighing 2.5 kg? - Brothers 29471
The two brothers are 41 years old. One is seven years older than the other. How old is your younger brother? - Three-quarters 28581
Jarek went for a one-day strawberry picking. In the morning, he collected two-fifths of the required amount; in the afternoon, he collected 5 kilograms less than in the morning, and in total, he collected three-quarters of the required amount. How many ki - A bottle
A bottle full of cola weighs 1,320 g. If we drink three-tenths of it, it will weigh 1,008g. How much does an empty bottle weigh? - Calculated 23231
There are 80 screws in the box with a total weight of 1.24 kg. The weight of one screw weighs 400g. Screw weight calculated in grams - Weighs 20983
The stone weighs 5 kg + half a stone. How much does a stone weigh? - Bent scale
Monica weighed 52 kg. Sara 54 kg. Together they weighed 111 kg. They noticed that the needle on the scale was bent. How much did they really weigh? - Apples 20043
From 10 kg of fresh apples, we get 1.25 kg of dried. How many kg of fresh do we need per 10 kg of dried? - Evaporates 19463
When drying mushrooms, water evaporates 50% of its weight. How many kilograms of mushrooms must we collect to make 5 kg of dried mushrooms? - Mushrooms 18933
When dried, mushrooms lose 80% of their weight. How many fresh mushrooms do we need to get half a kilogram of dried ones? - Consumption 18743
With the consumption of 0.4 t of coal per day, the supply lasts for 36 days. How many days will the supply be enough if 16 kg of coal is used less daily?
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