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Write Multi-Variable Expressions:Word Problem

The sum of two numbers is 10. The larger number is 4 more than the smaller number. What is the value of the larger number?

How many liters of 40% alcohol solution is produced if a 30% solution is added to 20 liters of a 50% alcohol solution?


Grace is 4 years older than Faith. If Grace is 10 years old at present, what will be Grace's age after 5 years?


Jenny needs a 10% saline solution. How many grams of pure water is to be added to 30 grams 20% saline solution to produce this mixture?

The sum between a negative number and 30 is 9 . What is the number?

How many liters of a 10% sugar solution must be mixed with 5 liters of a 30% sugar solution to make a 20% sugar solution?

The sum of two numbers is 6. Find the value of the smaller number if the larger number is twice the smaller number. 

. Beth is twice as old as Lean. After 5 years, Beth is 17 years old, what is Lean’s present age?

Jenny needs a 10% saline solution. How many grams of pure water is to be added to 30 grams 20% saline solution to produce this mixture?

Jerry is twice as old as Ben. If Jerry is 20 years old right now, what is Ben’s present age?