Why operators drive computation in R Programming - See It in Action

Why operators drive computation

📖 Scenario: Imagine you are helping a small shop owner calculate the total cost of items bought by customers. You will use simple math operators to add, subtract, multiply, and divide numbers to find totals and discounts.

🎯 Goal: You will build a small R program that uses operators to compute the total price of items, apply a discount, and calculate the final amount to pay.

📋 What You'll Learn

Create variables for item prices

Create a variable for discount rate

Use operators to calculate total price and discounted price

Print the final amount to pay

💡 Why This Matters

🌍 Real World

Small business owners often need to calculate totals and discounts quickly to help customers.

💼 Career

Understanding operators and basic calculations is essential for data analysis, finance, and programming jobs.

1

Create item price variables

Create three variables called item1, item2, and item3 with values 10, 20, and 30 respectively.

R Programming

# Create variables for item prices
# Your code here

Need a hint?

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

2

Create discount rate variable

Create a variable called discount_rate and set it to 0.1 to represent a 10% discount.

R Programming

item1 <- 10
item2 <- 20
item3 <- 30
# Create a variable for discount rate
# Your code here

Need a hint?

Remember to use <- to assign the discount rate.

3

Calculate total and discounted price

Create a variable called total_price that adds item1, item2, and item3. Then create a variable called final_price that subtracts the discount from total_price using the discount_rate.

R Programming

item1 <- 10
item2 <- 20
item3 <- 30
discount_rate <- 0.1
# Calculate total price and final price after discount
# Your code here

Need a hint?

Use + to add and - and * to calculate the discount.

4

Print the final amount to pay

Use print() to display the value of final_price.

R Programming

item1 <- 10
item2 <- 20
item3 <- 30
discount_rate <- 0.1
total_price <- item1 + item2 + item3
final_price <- total_price - (total_price * discount_rate)
# Print the final price
# Your code here

Need a hint?

Use print(final_price) to show the result.