Mixtures and solutions - practice for 12 year olds
Number of problems found: 29
- 12-carat 21203
I have a pile of 48 grams of 12-carat gold. How many grams of gold do I have in a pile? - Mixture
How many percentage mixtures do we get by adding 23ml of matter to 89ml of water? - Coolant
The driver filled the car coolant with a mixture of 3.9 liters and 2.6 liters of water antifreeze coolant. At what rate are these two components mixed? - Cottages
The summer camp is 41 cottages. Rooms are for three and four in them. How many of the 140 campers live on three? - Sea water
One tonne of seawater contains 25 kg of salt. How many tonnes of seawater needs to be evaporated to obtain 1 tonne of salt? - Crown
Siblings collect 2-crowns and 5-crowns. Together have 80 coins with a total of value 310 crowns. How many saved two crowns, and how many five crowns? - Femma
Emma mixes 1 7/8 cup of water with 2/3 cup of orange juice as a part of a recipe. How many cups is her mixture? - Mixing paint with water
Mr. Adamek will paint. The purchased paint is diluted with water in a ratio of 1: 1.5. a) how many parts of water will add to 1 part of the paint b) how many liters of water the mission adds to 2 liters of paint - Mixture 4673
We add 4 kg of tea to 2 kilograms of tea for 15 €, and we get the mixture for 12 €. How much is kg of second tea? - Solution 83019
Kitchen vinegar is an 8% solution of acetic acid in water. How many liters of acetic acid are needed to produce 275 liters of vinegar? - Temperature 6378
How many liters of 48 °C warm water do we need to add to 1.2 hl of 8 °C warm water to form a mixture with a temperature of 24 °C? - Vinegar
We must dilute 16 liters of 8.8% aqueous vinegar to 4.1% one. How much water is necessary to add? - Acid
The barrel is 199 liters of 38% acid. How many percent of acids occur when 61 liters revoke and replaced with the same amount of water? - Collection 70394
We mixed two types of candies into the collection. The first species is for 36 CZK per 1 kg, and the second species is for 54 CZK per 1 kg. What was the price of one kg of a mixture? - Liters 83211
We have 160 L of water at 67°C; how many liters of cold water at 18°C are needed to cool it to 39°C? - Contains 6176
Does the yeast cake contain milk, yeast, sugar, and flour in a ratio of 20:4:1:15. How much sugar do we need to make 160 kg of yeast? - Manganese
Manganese bronze contains the following metals per pound: copper 0.89 lb, tin 0.10 lb, and manganese 0.01 lb. How much copper is in a shaft that weighs 235 pounds? - Crown coins
Jana saves two-crown and five-crown coins. She has 32 coins in the cashier. How many two crowns and how many five crowns would she have if she saved 145 crowns? - Ingredients 20623
To prepare poultry risotto for 4 diners, we need 200 g of rice, 150 g of mushrooms, 150 g of peas, 300 g of chicken, 600 ml of stock, and 5 g of salt. What amount of ingredients do we need for 10 diners? - Peroxide
How much-distilled water (in liters) must pharmacists pour into 300 ml of 23.6% solution of hydrogen peroxide to get 2.7% solution to gargle?
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