About Linear Equations Word Problems Part 1:
After mastering linear equations in one variable, the next step is to learn how to tackle real-world problems. These are known as application problems or word problems. These problems require us to cipher through key information and create and solve an equation to gain our answer.
Test Objectives
- Demonstrate the ability to find the main objective in a word problem
- Demonstrate the ability to set up an equation when solving a word problem
- Demonstrate the ability to report the answer and ensure the result is reasonable
#1:
Instructions: Solve each word problem.
a) A piggy bank contains nickels, dimes, and quarters only. There are twice as many quarters as dimes, but only half as many nickels as dimes. The total value of the piggy bank is $11.25. How many quarters, dimes, and nickels are in the piggy bank?
Watch the Step by Step Video Solution View the Written Solution
#2:
Instructions: Solve each word problem.
a) Jacob inherited some money from his father. He deposited part of the money in a savings account paying 7% annual simple interest, and $40,000 less than that amount in a different account paying 13% annual simple interest. The annual income from both accounts is $8800. How much was invested at each rate?
Watch the Step by Step Video Solution View the Written Solution
#3:
Instructions: Solve each word problem.
a) A drug store clerk counts her cash register and finds that she has 10’s, 20’s, and 100’s only. There are five times as many 20’s as 10’s and one - quarter the amount of 100’s as 20’s. The total value of all bills is $2820. How many 10’s, 20’s, and 100’s were in the register?
Watch the Step by Step Video Solution View the Written Solution
#4:
Instructions: Solve each word problem.
a) The owner of a sandwich shop found that the orders on Monday for ham and cheese sandwiches were double that of turkey and one - half that of chicken. If 70 total sandwiches were sold between these three types, how much of each type of sandwich was sold?
Watch the Step by Step Video Solution View the Written Solution
#5:
Instructions: Solve each word problem.
a) Three siblings Jane, Bernie, and Ralph are different ages. Bernie is six years younger than Jane, and six years older than Ralph. If the combined age of the three is 54, how old is each person?
Watch the Step by Step Video Solution View the Written Solution
Written Solutions:
#1:
Solutions:
a) There are 18 dimes, 36 quarters, and 9 nickels in the piggy bank.
Watch the Step by Step Video Solution
#2:
Solutions:
a) $70,000 was invested at 7%, and $30,000 was invested at 13%.
Watch the Step by Step Video Solution
#3:
Solutions:
a) There were sixty 20 dollar bills, along with twelve 10 dollar bills, and fifteen 100 dollar bills.
Watch the Step by Step Video Solution
#4:
Solutions:
a) The sandwich shop sold 20 ham and cheese sandwiches along with 10 turkey sandwiches, and 40 chicken sandwiches.
Watch the Step by Step Video Solution
#5:
Solutions:
a) Jane is 24 years old, while Bernie is 18 years old, and Ralph is 12 years old.
