Question

At the beginning of the day you start your bank account at $25 you buy lunch for $18 and the tolls to get to work cost $10 on your way home you deposit a five dollar bill into your account how much money do you have in your account at the end of the day

Answer 1

$2

Explanation:

Setting up algebraic equations can help us solve everyday problems.

Creating an Equation

Using the verbal clues given, we can write out a numeric equation step by step. For this equation let T represent the total amount of money left in the account at the end of the day.

First, you start with 25 dollars.

• 25 = T

Next, you spend 18 and 10 dollars.

• 25 - (18 + 10) = T

Finally, you add 5 dollars back.

• 25 - (18 + 10) + 5 = T

Solving for T

Now, we have the equation 25 - (18 + 10) + 5 = T. To solve, add the numbers in the parentheses together.

• 25 - 28 + 5 = T

At this point, it is important to remember PEMDAS and that addition and subtraction are at the same level. So, subtraction needs to happen first because it is first in the equation.

• -3 + 5 = T

Finally, add the remaining terms

• 2 = T

At the end of the day, you have $2.