Question

Solving Equations Study Guide

19.) Nick opens a savings account with $50. Each week after, he deposits $15. In how
many weeks will he have saved $500?
Step 1: Underline any key information
Step 2: Define your variable.
Step 3: Write an equation
Step 4: Solve the equation:
Step 5: Answer in a complete sentence

Answer 1

He took 30 weeks to save $ 500

Explanation:

Let 'x' be the number of weeks

Money deposited after each week = $ 15

Money deposited 'x' weeks = 15 * x = 15x

Opening balance in his account = $50

So, money that will be in his account after x weeks = 50 +15x

Total money in the bank = $500

50 + 15x = 500

15 x = 500 - 50 { Subtract 50 from both sides}

15x = 450 { Divide both sides by 15}

15x/15 = 450/15

x = 30 weeks