Arithmetic operators in R Programming - Mini Project: Build & Apply

Arithmetic Operators in R

📖 Scenario: You are helping a small shop owner calculate prices and discounts using simple math operations in R.

🎯 Goal: Build a small R script that uses arithmetic operators to calculate total price, discount amount, and final price after discount.

📋 What You'll Learn

Create variables with exact numeric values

Use arithmetic operators: +, -, *, /

Assign results to new variables

Print the final result

💡 Why This Matters

🌍 Real World

Calculating prices, discounts, and totals is common in shops, restaurants, and online stores.

💼 Career

Basic arithmetic operations are essential for data analysis, finance, and programming tasks.

1

Create initial price variables

Create two variables in R called price_item1 and price_item2 with values 120 and 80 respectively.

R Programming

# Create variables price_item1 and price_item2 with values 120 and 80
# Your code here

Need a hint?

Use the assignment operator <- to assign values to variables.

2

Calculate total price

Create a variable called total_price that adds price_item1 and price_item2 using the + operator.

R Programming

price_item1 <- 120
price_item2 <- 80
# Calculate total_price by adding price_item1 and price_item2
# Your code here

Need a hint?

Use total_price <- price_item1 + price_item2 to add the two prices.

3

Calculate discount amount

Create a variable called discount_rate with value 0.1 (10%). Then create a variable called discount_amount that multiplies total_price by discount_rate using the * operator.

R Programming

price_item1 <- 120
price_item2 <- 80
total_price <- price_item1 + price_item2
# Create discount_rate with 0.1
# Calculate discount_amount by multiplying total_price and discount_rate
# Your code here

Need a hint?

Remember to assign discount_rate <- 0.1 and then multiply it with total_price.

4

Calculate final price and print

Create a variable called final_price that subtracts discount_amount from total_price using the - operator. Then print final_price using the print() function.

R Programming

price_item1 <- 120
price_item2 <- 80
total_price <- price_item1 + price_item2
discount_rate <- 0.1
discount_amount <- total_price * discount_rate
# Calculate final_price by subtracting discount_amount from total_price
# Print final_price
# Your code here

Need a hint?

Use final_price <- total_price - discount_amount and then print(final_price).