Define x as the amount Yuric can spend on lunch.
Set up the equation: 20 − x = 4.28 .
Solve for x : x = 20 − 4.28 = 15.72 .
Yuric can spend $15.72 on lunch.
Explanation
Problem Analysis Yuric found $20 and needs to save $4.28 for coffee. We need to determine how much he can spend on lunch.
Setting up the Equation Let x be the amount Yuric can spend on lunch. The equation representing this situation is 20 − x = 4.28 .
Solving for x To solve for x , we subtract 4.28 from 20: x = 20 − 4.28 . The result of this subtraction is x = 15.72 .
Final Answer Therefore, Yuric can spend $15.72 on lunch.
Examples
Imagine you have a $20 bill and need to buy groceries. You know you need to set aside $4.28 for a loaf of bread. This problem helps you calculate how much money you have left to spend on other groceries. Understanding subtraction and budgeting helps you manage your money effectively in everyday situations.