Achemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create a 30 liters of a 15% hydrogen peroxide solution. many liters of the 10% solution did the chemist use to make the 15% solution

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Robert has 78 tomatoes and 56 cucumbers he wants to plant them in equal rows how many in each row