Arithmetic operators in MATLAB - Mini Project: Build & Apply

Arithmetic Operators in MATLAB

📖 Scenario: You are helping a small shop owner calculate the total cost of items bought by customers. You will use arithmetic operators to add, subtract, multiply, and divide prices and quantities.

🎯 Goal: Build a simple MATLAB script that uses arithmetic operators to calculate the total price, discount, and final amount to pay.

📋 What You'll Learn

Create variables with exact names and values for prices and quantities

Use arithmetic operators: addition (+), subtraction (-), multiplication (*), and division (/)

Calculate total cost before discount

Calculate discount amount using a discount rate

Calculate final amount after discount

Print the final amount

💡 Why This Matters

🌍 Real World

Calculating prices and discounts is common in shops and online stores to help customers know how much to pay.

💼 Career

Understanding arithmetic operations and variables is essential for programming tasks in data analysis, finance, and software development.

1

Create item prices and quantities

Create variables called priceApple with value 3, priceBanana with value 2, qtyApple with value 5, and qtyBanana with value 7.

MATLAB

% Your code here to create price and quantity variables

Need a hint?

Use the assignment operator = to set values to variables.

2

Set discount rate

Create a variable called discountRate and set it to 0.1 (which means 10%).

MATLAB

priceApple = 3;
priceBanana = 2;
qtyApple = 5;
qtyBanana = 7;
% Your code here to create discountRate variable

Need a hint?

Discount rate is a decimal number representing percentage.

3

Calculate total cost and discount

Calculate the total cost before discount in a variable called totalCost by multiplying prices and quantities and adding them. Then calculate the discount amount in a variable called discountAmount by multiplying totalCost by discountRate.

MATLAB

priceApple = 3;
priceBanana = 2;
qtyApple = 5;
qtyBanana = 7;
discountRate = 0.1;
% Your code here to calculate totalCost and discountAmount

Need a hint?

Use * for multiplication and + for addition.

4

Calculate final amount and display

Calculate the final amount to pay in a variable called finalAmount by subtracting discountAmount from totalCost. Then print the finalAmount using disp.

MATLAB

priceApple = 3;
priceBanana = 2;
qtyApple = 5;
qtyBanana = 7;
discountRate = 0.1;
totalCost = priceApple * qtyApple + priceBanana * qtyBanana;
discountAmount = totalCost * discountRate;
% Your code here to calculate finalAmount and display it

Need a hint?

Use - for subtraction and disp to show the result.